Get Wheels and tires Guide for Mercedes C Class 4 Door Second Generation (2007-2013)

Useful information ............................ 310

Important safety notes .................... 310

Operation ........................................... 310

Winter operation ............................... 312

Tire pressure ..................................... 313

Loading the vehicle .......................... 321

Maximum load rating ....................... 325

Uniform Tire Quality Grading

Standards .......................................... 326

Tire labeling ....................................... 327

Definition of terms for tires and

loading ............................................... 331

Changing awheel ............................. 334

Mounting awheel ............................. 334

Wheel and tire combinations ........... 338

Emergency spare wheel ................... 342

309

Wheels and tires

Useful information

This Operator's Manual describes all

models and all standard and optional

equipment of your vehicle available at the

time of publication of the Operator's

Manual. Country-specific differences are

possible. Please note that your vehicle may

not be equipped with all features

described. This also applies to safety-

related systems and functions.

Read the information on qualified

specialist workshops: (Y page 25).

Important safety notes

WARNING

If wheels and tires of the wrong size are used,

the wheel brakes or suspension components

may be damaged. There is arisk of an

accident.

Always replace wheels and tires with those

that fulfill the specifications of the original

part.

When replacing wheels, make sure to use the

correct:

designation

model

When replacing tires, make sure to use the

correct:

designation

manufacturer

model

WARNING

Aflat tire severely impairs the driving,

steering and braking characteristics of the

vehicle. There is a risk of accident.

Tires without run-flat characteristics:

do not drive with aflat tire.

immediately replace the flat tire with your

emergency spare wheel or spare wheel, or

consult a qualified specialist workshop.

Tires with run-flat characteristics:

pay attention to the information and

warning notices on MOExtended tires (tires

with run-flat characteristics).

Accessories that are not approved for your

vehicle by Mercedes-Benzorare not being

used correctly can impair the operating

safety.

Before purchasing and using non-approved

accessories, visitaqualified specialist

workshop and inquire about:

suitability

legal stipulations

factory recommendations

Information on the dimensions and types of

wheels and tires for your vehicle can be found

in the "Wheel/tire combinations" section

(Y page 338).

Information on air pressure for the tires on

your vehicle can be found:

on the vehicle's Tire and Loading

Information placard on the B-pillar

on the tire pressure label on the fuel filler

flap

in the "Tire pressure" section

Modification work on the brake system and

wheels is not permitted. The use of wheel

spacers or brake dust shields is not

permitted. This invalidates the general

operating permit for the vehicle.

Further information on wheels and tires

can be obtained at any qualified specialist

workshop.

Operation

Information on driving

If the vehicle is heavily loaded, checkthe

tire pressures and correct them if

necessary.

When parking your vehicle, make sure that

the tires do not get deformed by the curb

310

Operation

Wheels and tires

or other obstacles. If it is necessary to drive

over curbs, speed humps or similar

elevations, try to do so slowly and at an

obtuse angle. Otherwise, the tires,

particularly the sidewalls, may be

damaged.

Regular checking of wheels and tires

WARNING

Damaged tires can cause tire inflation

pressure loss. As a result, you could lose

control of your vehicle. There is a risk of

accident.

Check the tires regularly for signs of damage

and replace any damaged tires immediately.

Regularly check the wheels and tires of

your vehicle for damage (e.g. cuts,

punctures, tears, bulges on tires and

deformation or cracks or severe corrosion

on wheels) at least once amonth, as well

as after driving off-road or on rough roads.

Damaged wheels can cause a loss of tire

pressure.

Regularly check the tire tread depth and

the condition of the tread across the whole

width of the tire (Y page 311). If necessary,

turn the front wheels to full lock in order to

inspect the inner side of the tire surface.

All wheels must have a valve cap to protect

the valve against dirt and moisture. Do not

mount anything onto the valve other than

the standard valve cap or other valve caps

approved by Mercedes-Benz for your

vehicle. Do not use any other valve caps or

systems, e.g. tire pressure monitoring

systems.

Regularly check the pressure of all the tires

including the emergency spare wheel or the

spare wheel, particularly prior to long trips,

and correctthe pressure as necessary

(Y page 313).

Tire tread

WARNING

Insufficient tire tread will reduce tire traction.

The tire is no longer able to dissipate water.

This means that on wet road surfaces, the risk

of hydroplaning increases, in particular where

speed is not adapted to suit the driving

conditions. There is a risk of accident.

If the tire pressure is too high or too low, tires

may exhibit different levels of wear at

different locations on the tire tread. Thus, you

should regularly check the tread depth and

the condition of the tread across the entire

width of all tires.

Minimum tire tread depth for:

Summer tires: â in (3 mm)

M+S tires: ã in (4 mm)

For safety reasons, replace the tires before

the legally prescribed limit for the minimum

tire tread depth is reached.

Treadwearindicators (TWI) are required by

law. Six indicators are positioned on the tire

tread. They are visible once the tread depth

is approximately á in (1.6 mm). If thisisthe

case, the tire is so worn that it must be

replaced.

Bar indicator : for tread wear is integrated

into the tire tread.

Operation

311

Wheels and tires

Selecting, mounting and replacing

tires

Only mount tires and wheels of the same

type and make.

Exception: it is permissible to install a

different type or make in the event of a flat

tire. Observe the "MOExtended tires (tires

with run-flat characteristics)" section

(Y page 297)

Only mount tires of the correct size onto

the wheels.

After mounting new tires, break them in at

moderate speeds for the first 60 miles

(100 km), as they only reach their full

performance after this distance.

Do not drive with tires which have too little

tread depth, as this significantly reduces

the traction on wet roads (hydroplaning).

Replace the tires after six years at the

latest, regardless of wear. This also applies

to the spare wheel/emergency spare

wheel.

The service life of tires depends on the

following factors amongst other things:

Driving style

Tire pressure

Distance covered

MOExtended tires (tires with run-flat

properties)

MOExtended tires (tires with run-flat

properties) allow you to continue driving your

vehicle even if one or more tires are entirely

deflated.

MOExtended tires may only be used in

conjunction with an active tire pressure loss

warning system or with an active tire pressure

monitor and on wheels specifically tested by

Mercedes-Benz.

Notes on driving with MOExtended tires in the

event of a flat tire can be found in the

"Breakdown assistance" section

(Y page 297).

Winter operation

Points to remember

Have your vehicle winterproofed at a qualified

specialist workshop at the onset of winter.

Observe the notes in the "Changing a wheel"

section (Y page 334).

Driving with summer tires

At temperatures below 45 ‡(+7 †), summer

tires lose elasticity and therefore traction and

braking power. Change the tires on your

vehicle to M+S tires. Using summer tires at

very cold temperatures could cause cracks to

form, thereby damaging the tires

permanently. Mercedes-Benz cannot accept

responsibility for this type of damage.

M+S tires

WARNING

M+S tires with a tire tread depth of less than

ã in (4 mm) are not suitable for use in winter

and do not provide sufficient traction. There

is a risk of an accident.

M+S tires with a tread depth of less than ã

in (4 mm) must be replaced immediately.

At temperatures below 45 ‡ (+7 †), use

winter tires or all-season tires. Both types of

tire are identified by the M+S marking.

Only winter tires bearing the i snowflake

symbol in addition to the M+S marking

provide the best possible grip in wintry road

conditions. Only these tires will allow driving

safety systems such as ABS and ESP

function optimally in winter. These tires have

beendeveloped specifically for driving in

snow.

Use M+S tires of the same make and tread on

all wheels to maintain safe handling

characteristics.

312

Winter operation

Wheels and tires

Always observe the maximumpermissible

speed specified for the M+S tires you have

mounted.

When you have mounted M+S tires:

Check the tire pressures (Y page 317).

Vehicles for Canada: restart the tire

pressure loss warning system

(Y page 317).

Vehicles for USA: restart the tire pressure

monitor (Y page 318).

For more information on driving with the

emergency spare wheel, see (Y page 342).

Snow chains

WARNING

If snow chains are installed to the front

wheels, they may drag against the vehicle

body or chassis components. This could

cause damage to the vehicle or the tires.

There is a risk of an accident.

To avoid hazardous situations:

never install snow chains to the front

wheels

always install snow chains in pairs to the

rear wheels.

On some tire sizes there is not enough

space for snow chains. To avoid damage to

the vehicle or tires, observe the "Wheel and

tire combinations" section under "Tires and

wheels".

Vehicles with steel wheels: if you wish

to mount snow chains on steel wheels,

make sure that you remove the respective

wheels' hubcaps first.The hubcaps may

otherwise be damaged.

For safety reasons, Mercedes-Benz

recommends that you only use snow chains

that have been specially approved for your

vehicle by Mercedes-Benz, or are of a

corresponding standard of quality.

If you intend to mount snow chains, please

bear the following points in mind:

snow chains may not be mounted on all

wheel/tire combinations. Permissible

wheel-tire combinations (Y page 338).

only use snow chains when driving on roads

completely covered by snow. Remove the

snow chains as soon as possible when you

come to a road that is not snow-covered.

local regulations may restrict the use of

snow chains. Observe the appropriate

regulations if you wish to mount snow

chains.

do not exceed the maximum permissible

speed of 30 mph (50 km/h).

You may wish to deactivate

ESP

(Y page 66) when pulling away with

snow chains installed. You can thereby

allow the wheels to spin in a controlled

manner, achieving an increased driving

force (cutting action).

For more information on driving with the

emergency spare wheel, see (Y page 342).

Tire pressure

Tire pressure specifications

WARNING

Underinflated or overinflated tires pose the

following risks:

the tires may burst, especially as the load

and vehicle speed increase.

the tires may wear excessively and/or

unevenly, which may greatly impair tire

traction.

the driving characteristics, as well as

steering and braking, may be greatly

impaired.

There is a risk of an accident.

Tire pressure

313

Wheels and tires

Follow recommended tire inflation pressures

and check the pressure of all the tires

including the spare wheel:

monthly, at least

if the load changes

before beginning a long journey

under different operating conditions, e.g.

off-road driving

If necessary, correct the tire pressure.

The recommended tire pressures for the tires

mounted at the factory can be found on the

labels described here.

1.) Tire and Loading Information placard

on the B-pillaronthe driver's side of the

vehicle (Y page 321).

The Tire and Loading Information placard

contains the recommended tire pressures for

cold tires on a fully loaded vehicle and for the

maximum permissible vehicle speed.

The specifications given on the following

Tire and Loading Information placard are

examples. Tire pressure specifications are

vehicle-specific and may deviate from the

data shown here. The tire pressures

applicable to your vehicle can be found on

the Tire and Loading Information placard on

your vehicle.

Recommended tire pressures

Option 2) Tire pressure table on the inside

of the fuel filler flap.

The tire pressure table contains the

recommended pressures for cold tires for

various operating conditions, i.e. differing

load and speed conditions.

Specifications shown in the examples of

tire pressure tables are for illustration

purposes only. Tire pressure specifications

are vehicle-specific and may deviate from

the data shown here. Tire pressure

specifications applicable to your vehicle

are located in your vehicle's tire pressure

table.

Example: tire pressure table for all tires permitted

for this vehicle by the factory

If a tire size precedes a tire pressure, the tire

pressure information following is only valid

for that tire size. The load conditions "partially

laden" and "fully laden" are defined in the

table for different numbers of occupants and

amounts of luggage. The actual number of

seats may differ.

Example: tire pressure table with tire dimensions

Some tire pressure tables show only the rim

diameters instead of the full tire size, e.g.

R18. The rim diameter is part of the tire size

314

Tire pressure

Wheels and tires

and can be found on thetire sidewall

(Y page 328).

If the tire pressures have been set to the

lower values for lighter loads and/or lower

road speeds, the pressures should be reset

to the higher values:

if you want to drive with an increased load

and/or

if you want to drive at higher road speeds.

The tire pressures for increased loads

and/or higher road speeds, shown in the

tire pressure table, may have a negative

effect on driving comfort.

Option 3) The tire pressure for the

emergency/collapsible spare wheel

(depending on vehicle equipment) can be

found:

printed in yellow on the rim of the

emergency/collapsible spare wheel

in the "Wheel and tire combinations"

section (Y page 338) in this Operator's

Manual

on the Tire and Loading Information placard

on the B-pillar on the driver's side

If the tire pressure is not set correctly, this

can lead to an excessivebuild up of heat and

a suddenloss of pressure.

For more information, contact a qualified

specialist workshop.

Important notes on tire pressure

WARNING

If the tire pressure drops repeatedly, the

wheel, valve or tire may be damaged. Tire

pressure that is too low may result in a tire

blow-out. There is a risk of an accident.

Check the tire for foreign objects.

Check whether the wheel is losing air or the

valve is leaking.

If you are unable to rectify the damage,

contact a qualified specialist workshop.

WARNING

If you fit unsuitable accessories onto tire

valves, the tire valves may be overloaded and

malfunction, which can cause tire pressure

loss. Due to their design, retrofitted tire

pressure monitors keep the tire valve open.

This can also result in tire pressure loss. There

is a risk of an accident.

Only screw the standard valve cap or other

valve caps approved by Mercedes-Benz for

your vehicle onto the tire valve.

To test tire pressure, use a suitable tire

pressure gauge. The outer appearance of a

tire does not permit any reliable conclusion

about the tire pressure. On vehicles equipped

with the electronic tire pressure monitoring

system, the tire pressure can be checked

using the on-board computer.

The tire temperature and pressure increase

when the vehicle is in motion.This is

dependent on the driving speed and the load.

Therefore, you should only correct tire

pressures when the tires are cold.

The tires are cold:

if the vehicle has been parked without

direct sunlight on the tires for at least three

hours and

if the vehicle has not been driven further

than 1 mile (1.6 km)

The tire temperature changes depending on

the outside temperature, the vehicle speed

and the tire load. If the tire temperature

Tire pressure

315

Wheels and tires

changes by 18 ‡ (10 †), the tire pressure

changes by approximately 10 kPa (0.1 bar/

1.5 psi). Take this into account when

checking the pressure of warm tires and only

correct the tire pressure if it is too low for the

current operating conditions.Ifyou check the

tire pressure when the tires are warm, the

resulting value will be higher than if the tires

were cold. This is normal. Do not reduce the

tire pressure to the value specified for cold

tires. The tire pressure would otherwise be

too low.

Observe the recommended tire pressures for

cold tires:

on the Tire and Loading Information placard

on the B-pillar on the driver's side

in the tire pressure table on the inside of

the fuel filler flap

printed in yellow on the rim of the

emergency/collapsible spare wheel

(depending on vehicle equipment)

Underinflated or overinflated tires

Underinflation

WARNING

Tires with pressure that is too low can

overheat and burst as a consequence. In

addition, they also suffer from excessive and/

or irregular wear, which can severely impair

the braking properties and the driving

characteristics. There is a risk of an accident.

Avoid tire pressures that are too low in all the

tires, including the spare wheel.

Underinflated tires may:

wear quickly and unevenly

have an adverse effect on fuel consumption

overheat, leading to tire defects

have an adverse effect on handling

characteristics

Overinflation

WARNING

Tires with excessively high pressure can burst

because they are damaged more easily by

road debris, potholes etc. In addition, they

also suffer from irregular wear, which can

severely impair the braking properties and the

driving characteristics. There is a risk of an

accident.

Avoid tire pressures that are too high in all the

tires, including the spare wheel.

Overinflated tires may:

have an adverse effect on handling

characteristics

wear quickly and unevenly

be more susceptible to damage

have an adverse effect on ride comfort

increase the braking distance

Maximum tire pressures

Never exceed the maximum permissible tire

inflation pressure. Always observe the

recommended tire pressure for your vehicle

when adjusting the tire pressure

(Y page 313).

Example: maximum permissible tire

pressure

The actual values for tires are vehicle-

specific and may deviate from the values in

the illustration.

316

Tire pressure

Wheels and tires

Checking the tire pressures

Important safety notes

Observe the "tire pressure information"

section(Ypage 313).

Information on air pressure for the tires on

your vehicle can be found:

on the vehicle's Tire and Loading

Information placard on the B-pillar

on the tire pressure label on the fuel filler

flap

in the "Tire pressure information" section

Checking tire pressures manually

To determine and set the correct tire

pressure, proceed as follows:

Remove the valve cap of the tire that is to

be checked.

Press the tire pressure gauge securely onto

the valve.

Read the tire pressure and compare it with

the recommended value on the Tire and

Loading Information placard on the

B-pillar on the driver's side of your vehicle.

If necessary, increase the tire pressure to

the recommended value (Y page 313).

If the tire pressure is too high, release air

by pressing down the metal pin in the valve

using the tip of a pen, for example. Then,

checkthe tire pressure again using the tire

pressure gauge.

Screw the valve cap onto the valve.

Repeatthese steps for the other tires.

Tire pressure loss warning system

(Canada only)

General notes

While the vehicle is in motion, the tire

pressure loss warning system monitors the

set tire pressure using the rotational speed of

the wheels. This enables the system to detect

significant pressure loss in a tire. If the speed

of rotation of a wheel changes as a result of

a loss of pressure, a corresponding warning

message will appearinthe multifunction

display.

You can recognize the tire pressure loss

warning by the

Run Flat Indicator

Active Press 'OK' to Restart message

which appears in the

Service menu of the

multifunction display. Further information on

the message display can be found under

"Restarting the tire pressure loss warning

system" section (Y page 318).

Important safety notes

The tire pressure warning system does not

warn you of an incorrectly set tire pressure.

Observe the notes on the recommended tire

pressure (Y page 313).

The tire pressure loss warning system does

not replace the need to regularly check your

vehicle's tire pressures, since an even loss of

pressure on several tires at the same time

cannot be detected by the tire pressure loss

warning system.

The tire pressure monitor is not able to warn

you of a sudden loss of pressure, e.g. if the

tire is penetrated by a foreign object. In the

event of a sudden loss of pressure, bring the

vehicle to a halt by braking carefully. Avoid

abrupt steering maneuvers.

The function of the tire pressure loss warning

system is limited or delayed if:

snow chains are mounted on your vehicle's

tires.

road conditions are wintry.

you are driving on sand or gravel.

you adopt a very sporty driving style

(cornering at high speeds or driving with

high rates of acceleration).

you are driving with a heavy load (in the

vehicle or on the roof).

Tire pressure

317

Wheels and tires

Restarting the tire pressure loss

warning system

Restartthe tire pressure loss warning system

if you have:

changed the tire pressure

changed the wheels or tires

mounted new wheels or tires

Before restarting, consult the Tire and

Loading Information placard on the

B-pillar on the driver's side or the tire

pressure table on the inside of the fuel filler

flap to ensure the tire pressure in all four

tires is set correctly for the current

operating conditions.

The tire pressure loss warning system can

only give reliable warnings if you have set

the correct tire pressure. If an incorrecttire

pressure is set, these incorrect values will

be monitored.

Observe the notes in the section on tire

pressures (Y page 313).

Make sure that the SmartKey is in position

2(Y page 141) in the ignition lock .

Press the = or ; button to selectthe

Service

menu.

Press the 9 or : button to select

Tire Pressure.

Press the a button.

The

Run Flat Indicator Active

Press 'OK' to Restart message

appears in the multifunction display.

If you wish to confirm the restart:

Press the a button.

The

Tire Pressure Now OK? message

appears in the multifunction display.

Press the 9 or : button to select

Yes.

Press the a button.

The

Run Flat Indicator Restarted

message appears in the multifunction

display.

After a teach-in period, the tire pressure

loss warning system will monitor the set

tire pressures of all four tires.

If you wish to cancel the restart:

Press the % button.

If the

Tire Pressure Now OK?

message

appears, use the 9 or : button to

select

Cancel

Press the a button.

The tire pressure values stored at the last

restart will continue to be monitored.

Tire pressure monitor

General notes

If a tire pressure monitor is installed, the

vehicle's wheels have sensors that monitor

the tire pressures in all four tires. The tire

pressure monitor warns you if the pressure

drops in one or more of the tires. The tire

pressure monitor only functions if the correct

sensors are installed to all wheels.

Information on tire pressures is displayed in

the multifunction display. After a few minutes

of driving, the current tire pressure of each

tire is shown in the multifunction display.

Example: current tire pressure display

Important safety notes

It is the driver's responsibility to set the tire

pressure to that recommended for cold tires

which is suitable for the operating situation

(Y page 313). Note that the correct tire

pressure for the current operating situation

must first be taught-in to the tire pressure

monitor. If there is a substantial loss of

318

Tire pressure

Wheels and tires

pressure, the warning threshold for the

warning message is aligned to the reference

values taught-in.Restart the tire pressure

monitor after adjusting the pressure of the

cold tires (Y page 320). The current

pressures are saved as new reference values.

As a result, a warning message will appear if

the tire pressure drops significantly.

The tire pressure monitor does not warn you

of an incorrectly set tire pressure. Observe

the notes on the recommended tire pressure

(Y page 313).

The tire pressure monitor is not able to warn

you of a sudden loss of pressure, e.g. if the

tire is penetrated by a foreign object. In the

event of a sudden loss of pressure, bring the

vehicle to a halt by braking carefully. Avoid

abrupt steering maneuvers.

The tire pressure monitor has a yellow

warning lamp in the instrument cluster for

indicating pressure loss/malfunctions (USA)

or pressure loss (Canada). Whether the

warning lamp flashes or lights up indicates

whether a tire pressure is too low or the tire

pressure monitor is malfunctioning:

if the warning lamp is lit continuously, the

tire pressure on one or more tires is

significantly too low. The tire pressure

monitor is not malfunctioning.

USA only: if the warning lamp flashes for

around a minute and then remains lit

constantly, the tire pressure monitor is

malfunctioning.

WARNING

Each tire, including the spare (if provided),

should be checked at least once a month

when cold and inflated to the pressure

recommended by the vehicle manufacturer

on the Tire and Loading Information placard

on the driver's door B-pillar or the tire

pressure label on the inside of the fuel filler

flap. If your vehicle has tires of a differentsize

than the size indicated on the Tire and Loading

Information placard or the tire pressure label,

you should determine the proper tire pressure

for those tires.

As an added safety feature, your vehicle has

been equipped with a tire pressure monitoring

system (TPMS) that illuminates a low tire

pressure telltale when one or more of your

tires are significantly underinflated.

Accordingly, when the low tire pressure

telltale illuminates, you should stop and check

your tires as soon as possible, and inflate

them to the proper pressure. Driving on a

significantly underinflated tire causes the tire

to overheat and can lead to tire failure.

Underinflation also reduces fuel efficiency

and tire tread life, and may affectthe vehicle's

handling and stopping ability.

Please note that the TPMS is not a substitute

for proper tire maintenance, and it is the

driver's responsibility to maintain correct tire

pressure, even if underinflation has not

reached the level to trigger illumination of the

TPMS low tire pressure telltale.

USA only:

Your vehicle has also been equipped with a

TPMS malfunction indicator to indicate if the

system is not operating properly. The TPMS

malfunction indicator is combined with the

low tire pressure telltale. When the system

detects a malfunction, the warning lamp will

flash for approximately a minute and then

remain continuously illuminated. This

sequence will be repeated every time the

vehicle is started as long as the malfunction

exists.

When the malfunction indicator is illuminated,

the system may not be able to detect or signal

low tire pressure as intended. TPMS

malfunctions may occur for a variety of

reasons, including the installation of

incompatible replacement or alternate tires

or wheels on the vehicle that prevent the

TPMS from functioning properly. Always

check the TPMS malfunction telltale after

replacing one or more tires or wheels on your

vehicle to ensure that the replacement or

alternate tires and wheels allow the TPMS to

continue to function properly.

USA only:

Tire pressure

319

Wheels and tires

If the tire pressure monitor is

malfunctioning, it may take more than ten

minutes for the tire pressure warning lamp

to inform you of the malfunction by flashing

for approximately one minute and then

remaining lit.

When the malfunction has been rectified,

the tire pressure warning lamp goes out

after a few minutes of driving.

The tire pressure values indicated by the

on-board computer may differ from those

measured at a gas station with a pressure

gauge. The tire pressures shown by the on-

board computer refer to those measured at

sea level.Athigh altitudes, the tire pressure

values indicated by a pressure gauge are

higher than those shown by the on-board

computer. In this case, do not reduce the

tire pressures.

The operation of the tirepressure monitor

can be affected by interference from radio

transmitting equipment (e.g. radio

headphones, two-way radios) that may be

being operated in or near the vehicle.

Checking the tire pressure

electronically

Make sure that the SmartKey is in position

2(Y page 141) in the ignition lock .

Press the = or ; button on the

steering wheel to select the

Service

menu.

Press the 9 or : button to select

Tire Pressure.

Press the a button.

The current tire pressure of each tire is

showninthe multifunction display.

If the vehicle has been parked for over

20 minutes,the

Tire pressures will be

displayed after driving a few

minutes message appears.

After a teach-in process, the tire pressure

monitor automatically detects new wheels or

new sensors. As long as a clear allocation of

the tire pressure value to the individual

wheels is not possible, the Tire Pressure

Monitor Active display message is shown

instead of the tire pressure display. The tire

pressures are already being monitored.

If a spare wheel/emergency spare wheel

is mounted, the system may continue to

show the tire pressure of the wheel that has

been removed for a few minutes. If this

occurs, note that the value displayed for

the position where the spare tire is

mounted is not the same as the spare

wheel/emergency spare wheel's current

tire pressure.

Tire pressure monitor warning

messages

If the tire pressure monitor detects a

significant pressure loss on one or more tires,

a warning message is shown in the

multifunction display. Awarning tone also

sounds and the tire pressure warning lamp

lights up in the instrumentcluster.

Each tire that is affected by a significant loss

of pressure is highlighted with a color.

If the following message appears in the

multifunction display:

Correct Tire

Pressure:

Check the tire pressure on all four wheels

and correct it if necessary.

If the wheel positions on the vehicle are

rotated, the tire pressures may be

displayed for the wrong positions for a

shorttime. This is rectified after a few

minutes of driving, and the tire pressures

are displayed for the correctpositions.

Restarting the tire pressure monitor

When you restart the tire pressure monitor,

all existing warning messages are deleted and

the warning lamps go out. The monitor uses

the currently set tire pressures as the

reference values for monitoring. In most

cases, the tire pressure monitoring system

recognizes the new reference values

automatically.

320

Tire pressure

Wheels and tires

However, you can also define reference

values manually as described here:

Set the tire pressure to the value

recommended for the corresponding

driving situation on the Tire and Loading

Information placard on the B-pillar on the

driver's side (Y page 313).

Additional tire pressure valuesfor driving

at high speeds or with heavy loads can be

found in the tire pressure table on the

inside of the fuel filler flap.

Make sure that the tire pressure is correct

on all four wheels.

Make sure that the SmartKey is in position

2 in the ignition lock.

Press the = or ; button on the

steering wheel to select the

Service

menu.

Press the 9 or : button to select

Tire Pressure.

Press the a button.

The multifunction display shows the

current tire pressure for the individual tires

or the

Tire pressures will be

displayed after driving a few

minutes message.

Press the : button.

The

Use Current Pressures as New

Reference Values message appears in

the multifunction display.

If you wish to confirm the restart:

Press the a button.

The

Tire Press. Monitor Restarted

message appears in the multifunction

display.

After driving for a few minutes, the system

checks whether the current tire pressures

are within the specified range. The new tire

pressures are then accepted as reference

values and monitored.

If you wish to cancel the restart:

Press the % button.

The tire pressure values stored at the last

restart will continue to be monitored.

Loading the vehicle

Instruction labels for tires and loads

WARNING

Overloaded tires can overheat, causing a

blowout. Overloaded tires can also impair the

steering and driving characteristics and lead

to brake failure. There is a risk of accident.

Observe the load rating of the tires. The load

rating must be at least half of the GAWR of

your vehicle. Never overload the tires by

exceeding the maximum load.

Two instruction labels on your vehicle show

the maximum possible load.

(1) The Tire and Loading Information placard

is on the B-pillar on the driver's side. The

Tire and Loading Information placard

shows the maximum permissible number

of occupants and the maximum

permissible vehicle load. It also contains

details of the tire sizes and

corresponding pressures for tires

mounted at the factory.

(2) The vehicle identification plate is on the

B-pillar on the driver's side. The vehicle

identification plate informs you of the

gross vehicle weight rating. It is made up

of the vehicle weight, all vehicle

occupants, the fuel and the cargo. You

can also find information about the

maximum gross axle weight rating on the

front and rear axle.

The maximum gross axle weight rating is

the maximum weight that can be carried

by one axle (front or rear axle). Never

exceed the maximum load or the

maximum gross axle weight rating for the

front or rear axle.

Loading the vehicle

321

Wheels and tires

B-pillar, driver's side

Maximum permissible load

The specifications shown on the Tire and

Loading Information placard in the

illustration are examples. The maximum

permissible load is vehicle-specificand

may deviate from the data shown here. The

maximumpermissible load that applies for

your vehicle can be found on your vehicle's

Tire and Loading Information placard.

Specification for maximum permissible

load : is listed on the Tire and Loading

Information placard: "The combined weight

of occupants and cargo should never

exceed XXX kilograms or XXX lbs."

The gross weight of all vehicle occupants,

load, luggage and trailer load/noseweight (if

applicable) must not exceed the specified

value.

Number of seats

The specifications shown on the Tire and

Loading Information placard in the

illustration are examples. The number of

seats is vehicle-specific and can differ from

the details shown. The number of seats in

your vehicle can be found on the Tire and

Loading Information placard.

Maximum number of seats : indicates the

maximum number of occupants allowed to

travel in the vehicle. This information can be

found on the Tire and Loading Information

placard.

Determining the correct load limit

Step-by-step instructions

The following steps have been developed as

required of all manufacturers under Title 49,

Code of U.S.Federal Regulations, Part 575

pursuant to the "National Traffic and Motor

Vehicle Safety Act of 1966".

Step 1: Locate the statement "The

combined weight of occupants and cargo

should never exceed XXX kg or XXX lbs." on

your vehicle’s Tire and Loading Information

placard.

Step 2: Determine the combined weight of

the driver and passengers that will be riding

in your vehicle.

Step 3: Subtract the combined weight of

the driver and passengers from XXX

kilograms or XXX lbs.

322

Loading the vehicle

Wheels and tires

Step 4: The resulting figure equals the

available amount of cargo and luggage load

capacity. For example, if the "XXX" amount

equals 1400 lbs and there will be five

150 lbs passengers in your vehicle, the

amount of available cargo and luggage load

capacity is 650 lbs (1 400 - 750 (5 x 150)

= 650 lbs).

Step 5: Determine the combined weight of

luggage and cargo being loaded on the

vehicle. That weight may not safely exceed

the available cargo and luggage load

capacity calculated in step 4.

Step 6 (if applicable): If your vehicle will

be towing a trailer, load from your trailer

will be transferred to your vehicle. Refer to

this Operator's Manual to determine how

this reduces the available cargo and

luggage load capacity of your vehicle

(Y page 325).

Loading the vehicle

323

Wheels and tires

Example: steps 1 to 3

The following table shows examples on how to calculate total and cargo load capacities with

varying seating configurations and number and size of occupants. The following examples use

a load limit of 1500 lbs (680 kg). This is for illustration purposes only. Make sure you are

using the actual load limit for yourvehicle stated on your vehicle's Tire and Loading Information

placard (Y page 322).

Example 1 Example 2 Example 3

Step 1 Combined maximum

weight of occupants

and cargo (data from

the Tire and Loading

Information placard)

1500 lbs

(680 kg)

1500 lbs

(680 kg)

1500 lbs

(680 kg)

Example 1 Example 2 Example 3

Step 2 Number of people in

the vehicle (driver

and occupants)

5 3 1

Distribution of the

occupants

Front: 2

Rear: 3

Front: 1

Rear: 2

Front: 1

Weight of the

occupants

Occupant 1:

150 lbs (68 kg)

Occupant 2:

180 lbs (82 kg)

Occupant 3:

160 lbs (73 kg)

Occupant 4:

140 lbs (63 kg)

Occupant 5:

120 lbs (54 kg)

Occupant 1:

200 lbs (91 kg)

Occupant 2:

190 lbs (86 kg)

Occupant 3:

150 lbs (68 kg)

Occupant 1:

150 lbs (68 kg)

Gross weight of all

occupants

750 lbs (340 kg) 540 lbs (245 kg) 150 lbs (68 kg)

324

Loading the vehicle

Wheels and tires

Example 1 Example 2 Example 3

Step 3 Permissible load and

trailer load/

noseweight

(maximum

permissible load

rating from the Tire

and Loading

Information placard

minus the gross

weight of all

occupants)

1500 lbs

(680 kg) -

750 lbs (340 kg)

= 750 lbs

(340 kg)

1500 lbs

(680 kg) -

540 lbs (245 kg)

= 960 lbs

(435 kg)

1500 lbs

(680 kg) -

150lbs (68 kg) =

1350 lbs

(612 kg)

The higher the weight of all the occupants, the smaller the maximum load for luggage.

Further information can be found under "Towing atrailer" (Y page 325).

Vehicle identification plate

Even if you have calculated the total load

carefully, you should still make sure that the

gross vehicle weight rating and the gross axle

weight rating are not exceeded. Details can

be found on the vehicle identification plate on

the B-pillar on the driver's side of the vehicle

(Y page 321).

Permissible gross vehicle weight: the

gross weight of the vehicle, all passengers,

load and trailer load/noseweight(if

applicable) must not exceed the permissible

gross vehicle weight.

Gross axle weight rating: the maximum

permissible weight that can be carried by one

axle (front or rear axle).

To ensure that your vehicle does not exceed

the maximum permissible values (gross

vehicle weight and maximum gross axle

weight rating), have your loaded vehicle

(including driver, occupants, cargo, and full

trailer load if applicable) weighed on a

suitable vehicle weighbridge.

Trailer load/noseweight

The trailer load/noseweightaffects the gross

weight of the vehicle. If a trailer is attached,

the trailer load/noseweight is included in the

load along with occupants and luggage. The

trailer load/noseweight is usually

approximately 10% of the gross weight of the

trailer and its load.

YourMercedes-Benz has been designed

primarily to carry passengers and their

luggage. Mercedes-Benzdoes not

recommend towing a trailer with your vehicle.

Maximum load rating

Do not overload the tires by exceeding the

specified load limit. The maximum

permissible load can be found on the

vehicle's Tire and Loading Information

placard on the B-pillar on the driver's side

(Y page 321).

Maximum load rating

325

Wheels and tires

The actual values for tires are vehicle-

specific and may deviate from the values in

the illustration.

Maximum tire load : is the maximum

permissible weight for which the tire is

approved.

Uniform Tire Quality Grading

Standards

Overview of Tire Quality Grading

Standards

Uniform Tire Quality Grading Standards are

U.S. government specifications. Their

purpose is to provide drivers with uniform

reliable information on tire performance data.

tire manufacturers have to grade tires using

three performance factors: tread wear :,

tire traction ; and heat resistance =. All

tires sold in North America are provided with

the corresponding quality class mark on the

sidewall of the tire, even though these

regulations do not apply to Canada.

The actual values for tires are vehicle-

specific and may deviate from the values in

the illustration.

Where applicable, the tire grading

information can be found on the tire sidewall

between the tread shoulder and maximum

tire width.

For example:

Treadwear Traction Temperature

200 AA A

All passenger car tires must conform to the

statutory safety requirements in addition to

these grades.

Treadwear

The treadwear grade is a comparative rating

based on the wear rate of the tire when tested

under controlled conditions on a specified

U.S. government course. For example, a tire

graded 150 would wear one and one-half

times as well on the government course as a

tire graded 100.

The relative performance of tires depends

upon the actual conditions of their use,

however, and may depart significantly from

the norm, due to variations in driving habits,

service practices and differences in road

characteristics and climate conditions.

Traction

WARNING

The traction grade assigned to this tire is

based on straight-ahead braking traction

tests, and does not include acceleration,

cornering, hydroplaning, or peak traction

characteristics.

The traction grades, from highest to lowest,

are AA, A, B, and C. Those grades represent

the tire's ability to stop on a wet surface as

measured under controlled conditions on

326

Uniform Tire Quality Grading Standards

Wheels and tires

specified government test surfaces of asphalt

and concrete. Atire marked C may have poor

traction performance.

The safe speed on a wet, snow covered or icy

road is always lower than on dry road

surfaces.

You should pay special attention to road

conditions when temperatures are around

the freezing point.

Mercedes-Benz recommends a minimum

tread depth of ã in (4 mm) for all four winter

tires (Y page 312) to maintainnormal driving

characteristics in winter. Winter tires can

reduce the braking distance on snow-covered

surfaces in comparison with summer tires.

Stopping distance, however, is still

considerably greater than when the road is

not covered with ice or snow. Take

appropriate care when driving.

Avoid wheelspin. This can lead to damage

to the drive train.

Temperature

WARNING

The temperature grade for this tire is

established for a tire that is properly inflated

and not overloaded. Excessive speed,

underinflation, or excessive loading, either

separately or in combination, can cause

excessive heat build-up and possible tire

failure.

The temperature grades are A(the highest),

B, and C. These represent the tire's

resistance to the generationofheat and its

ability to dissipate heat when tested under

controlled conditions on a specified indoor

laboratory test wheel. Sustained high

temperature can cause the material of the tire

to degenerate and reduce tire life, and

excessive temperature can lead to sudden

tire failure. The grade Ccorresponds to a level

of performance which all passenger car tires

must meet under the Federal Motor Vehicle

Safety Standard No. 109. Grades B and A

represent higher levels of performance on the

laboratory test wheel than the minimum

required by law.

Tire labeling

Overview of tire labeling

The following markings are on the tire in

addition to the tire name (sales designation)

and the manufacturer's name:

Uniform Tire Quality Grading Standard

(Y page 331)

;

DOT, Tire Identification Number

(Y page 330)

Maximum tire load (Y page 325)

Maximum tire pressure (Y page 316)

Manufacturer

Tire material (Y page 331)

Tire size designation, load-bearing

capacity and speed index (Y page 328)

Load index (Y page 330)

Tire name

Tire data is vehicle-specific and may

deviate from the data in the example.

Tire labeling

327

Wheels and tires

Tire size designation,load-bearing

capacity and speed rating

Tire width

;

Nominal aspectratio in %

Tire code

Rim diameter

Load bearing index

Speed rating

Tire data is vehicle-specific and may

deviate from the data in the example.

General: depending on the manufacturer's

standards, the size imprinted in the tire wall

may not contain any letters or may contain

one letterthat precedes the size description.

If there is no letter preceding the size

description (as shown above): these are

passenger vehicle tires according to

European manufacturing standards.

If "P" precedes the size description: these are

passenger vehicle tires according to U.S.

manufacturing standards.

If "LT" precedes the size description: these

are light truck tires according to U.S.

manufacturing standards.

If "T" precedes the size description: these are

compact emergency spare wheels at high tire

pressure, to be used only temporarily in an

emergency.

Tire width: tire width : shows the nominal

tire width in millimeters.

Height-width ratio: aspect ratio ; is the

size ratio between the tire height and tire

width and is shown in percent.The aspect

ratio is calculated by dividing the tire width by

the tire height.

Tire code: tire code = specifies the tire type.

"R" represents radial tires; "D" represents

diagonal tires; "B" represents diagonal radial

tires.

Optionally, tires with a maximum speed of

over 149 mph (240 km/h) may have "ZR" in

the size description, depending on the

manufacturer (e.g. 245/40 ZR 18).

Rim diameter: rim diameter ? is the

diameter of the bead seat, not the diameter

of the rim flange. The rim diameter is

specified in inches (in).

Load-bearing index: load-bearing index A

is a numerical code that specifies the

maximum load-bearing capacity of a tire.

Do not overload the tires by exceeding the

specified load limit. The maximum

permissible load can be found on the

vehicle's Tire and Loading Information

placard on the B-pillar on the driver's side

(Y page 321).

Example:

Load-bearing index 91 indicates a maximum

load of 1,356 lb (615 kg) that the tires can

bear. For further information on the maximum

tire load in kilograms and lbs, see

(Y page 325).

For further information on the load bearing

index, see "Load index" (Y page 330).

Speed rating: speed rating B specifies the

approved maximum speed of the tire.

WARNING

Exceeding the stated tire load-bearing

capacity and the approved maximum speed

could lead to tire damage or the tire bursting.

There is a risk of accident.

Therefore, only use tire types and sizes

approved for your vehicle model. Observe the

tire load rating and speed rating required for

your vehicle.

Regardless of the speed rating, always

observe the speed limits. Drive carefully and

328

Tire labeling

Wheels and tires

adapt your driving style to the traffic

conditions.

Summer tires

Index Speed rating

Q up to 100 mph (160 km/h)

R up to 106 mph (170 km/h)

S up to 112 mph (180 km/h)

T up to 118 mph (190 km/h)

H up to 130 mph (210 km/h)

V up to 149 mph (240 km/h)

W up to 168 mph (270 km/h)

Y up to 186 mph (300 km/h)

ZR...Y up to 186 mph (300 km/h)

ZR...(..Y) over 186 mph (300 km/h)

ZR over 149 mph (240 km/h)

Optionally, tires with a maximum speed of

over 149 mph (240 km/h) may have "ZR"

in the size description, depending on the

manufacturer (e.g. 245/40 ZR18).

The service specificationis made up of

load-bearing index A and speed rating

If the size description of your tire includes

"ZR" and there are no service

specifications, ask the tire manufacturer in

order to find out the maximum speed.

If a service specification is available, the

maximum speed is limited according to the

speed rating in the service specification.

Example: 245/40 ZR 18 97 Y. In this

example, "97 Y" is the service specification.

The letter "Y" represents the speed rating.

The maximum speed of the tire is limited to

186 mph (300 km/h).

The size descriptionfor all tires with

maximum speeds of over 186 mph

(300 km/h) must include "ZR", and the

service specification must be given in

parentheses. Example:

275/40 ZR 18 (99 Y). Speed rating "(Y)"

indicates that the maximum speed of the

tire is over 186 mph (300 km/h). Ask the

tire manufacturer about the maximum

speed.

All-weather tires and winter tires

Index Speed rating

Q M+S

up to 100 mph (160 km/h)

T M+S

up to 118 mph (190 km/h)

H M+S

up to 130 mph (210 km/h)

V M+S

up to 149 mph (240 km/h)

Not all tires with the M+S marking provide

the driving characteristics of winter tires.

In addition to the M+S marking, winter tires

also have the i snowflake symbol on

the tire wall. Tires with this marking fulfill

the requirements of the Rubber

Manufacturers Association (RMA) and the

Rubber Association of Canada (RAC)

regarding snow traction, and were specially

developed for driving on snow.

An electronic speed limiter prevents your

vehicle from exceeding the following speeds:

all vehicles (except AMG vehicles):

130 mph (210 km/h)

AMG vehicles: 155 mph (250 km/h)

AMG vehicles with increased top speed:

174 mph (280 km/h)

The speed rating of tires mounted at the

factory may be higher than the maximum

speed that the electronic speed limiter

permits.

Make sure that your tires have the required

speed rating for your vehicle as specified in

the "tires" section (Y page 338), e.g. if you

buy new tires.

Or M+Si for winter tires.

Tire labeling

329

Wheels and tires

Further information aboutreading tire data

can be obtained from any qualified specialist

workshop.

Load index

Tire data is vehicle-specific and may

deviate from the data in the example.

In addition to the load-bearing index, load

index : may be imprinted after the letters

that identify speed rating B(Y page 328) on

the sidewall of the tire.

If no specification is given: no text(as in the

example above), represents astandard

load (SL) tire

XL or Extra Load: represents a reinforced

tire

LightLoad: represents a light load tire

C, D, E: represents a load range that

depends on the maximum load that the tire

can carry at a certain pressure

DOT, Tire Identification Number (TIN)

U.S. tire regulations prescribe that every

manufacturer of new tires or retreader has to

imprint a TIN in or on the sidewall of each tire

produced.

The TIN is a unique identification number. The

TIN enables tire manufacturers to inform

purchasers of recalls and other safety-

relevant matters. It makes it possible for the

purchaser to easily identify the affected tires.

The TIN is made up of manufacturer

identification code ;, tire size =, tire type

code ? and manufacturing date A.

Tire data is vehicle-specific and may

deviate from the data in the example.

DOT (Department of Transportation): tire

symbol : indicates that the tire complies

with the requirements of the U.S. Department

of Transportation.

Manufacturer identification code:

manufacturer identification code ; provides

details on the tire manufacturer. New tires

have a code with two symbols. Retreaded

tires have a code with four symbols.

For further information about retreaded tires,

see (Y page 310).

Tire size: identifier = describes the tire size.

Tire type code: tire type code ? can be used

by the manufacturer as acode to describe

specific characteristics of the tire.

Date of manufacture: date of manufacture

A provides information about the age of a

tire. The first and second positions represent

the week of manufacture, starting with "01"

for the first calendar week. Positions three

and four represent the year of manufacture.

For example, a tire that is marked with

"3208", was manufactured in week 32 in

2008.

330

Tire labeling

Wheels and tires

Tire characteristics

Tire data is vehicle-specific and may

deviate fromthe data in the example.

This information describes the type of tire

cord and the number of layers in

sidewall : and under tire tread ;.

Definition of terms for tires and

Tire ply composition and material

used

Describes the number of plies or the number

of layers of rubber-coated fabric in the tire

tread and sidewall. These are made of steel,

nylon, polyester and other materials.

Bar

Metric unit for tire pressure.

14.5038 pounds per square inch (psi) and

100 kilopascals (kPa) are the equivalent of

1 bar.

DOT (Department of Transportation)

DOT marked tires fulfill the requirements of

the United States Department of

Transportation.

Normal occupant weight

The number of occupants for which the

vehicle is designed multiplied by

68 kilograms (150 lbs).

Uniform Tire Quality Grading

Standards

Auniform standard to grade the quality of

tires with regards to tread quality, tire traction

and temperature characteristics. Ratings are

determined by tire manufacturers using U.S.

government testing procedures. The ratings

are molded into the sidewall of the tire.

Recommended tire pressure

The recommended tire pressure applies to

the tires mounted at the factory.

The Tire and Loading Informationplacard

contains the recommended tire pressures for

cold tires on a fully loaded vehicle and for the

maximum permissible vehicle speed.

The tire pressure table contains the

recommended pressures for cold tires for

various operating conditions, i.e. differing

load and speed conditions.

Increased vehicle weight due to

optional equipment

This is the combined weight of all standard

and optional equipmentavailable for the

vehicle, regardless of whetheritis actually

installed on the vehicle or not.

Rim

This is the part of the wheel on which the tire

is mounted.

Definition of terms for tires and loading

331

Wheels and tires

GAWR (Gross Axle Weight Rating)

The GAWR is the maximumgross axle weight

rating. The actual load on an axle must never

exceed the gross axle weight rating. The

gross axle weight rating can be found on the

vehicle identification plate on the B-pillar on

the driver's side.

Speed rating

The speed rating is part of the tire

identification. It specifies the speed range for

which the tire is approved.

GVW (Gross Vehicle Weight)

The gross vehicle weight includes the weight

of the vehicle including fuel, tools, the spare

wheel, accessories installed, occupants,

luggage and the drawbar noseweight, if

applicable.The gross vehicle weight must not

exceed the gross vehicle weight rating GVWR

as specified on the vehicle identification plate

on the B-pillar on the driver's side.

GVWR (Gross Vehicle Weight Rating)

The GVWR is the maximum permissible gross

weight of a fully loaded vehicle (the weight of

the vehicle including all accessories,

occupants, fuel, luggage and the drawbar

noseweight, if applicable). The gross vehicle

weight rating is specified on the vehicle

identification plate on the B-pillar on the

driver's side.

Maximum loaded vehicle weight

The maximum weight is the sum of the curb

weight of the vehicle, the weight of the

accessories, the total load limit and the

weight of the optional equipment installed at

the factory.

Kilopascal (kPa)

Metric unit for tire pressure. 6.9 kPa

corresponds to 1 psi. Another unit for tire

pressure is bar. 100 kilopascals (kPa) are the

equivalent of 1bar.

Load index

In addition to the load-bearing index, the load

index may also be imprinted on the sidewall

of the tire. This specifiesthe load-bearing

capacity more precisely.

Curb weight

The weight of a vehicle with standard

equipment including the maximum capacity

of fuel, oil and coolant. It also includes the air-

conditioning system and optional equipment

if these are installed in the vehicle, but does

not include passengers or luggage.

Maximum load rating

The maximum load rating in kilograms or

pounds is the maximum weight for which a

tire is approved.

Maximum permissible tire pressure

Maximum permissible tire pressure for one

tire.

Maximum load on one tire

Maximum load on one tire. This is calculated

by dividing the maximum axle load of one axle

by two.

PSI (pounds per square inch)

Astandard unitofmeasure for tire pressure.

332

Definition of terms for tires and loading

Wheels and tires

Aspect ratio

Relationship between tire height and tire

width in percent.

Tire pressure

This is pressure inside the tire applying an

outward force to each square inch of the tire's

surface. The tire pressure is specified in

pounds per square inch (psi), in kilopascal

(kPa) or in bar. The tire pressure should only

be corrected when the tires are cold.

Tire pressure of cold tires

The tires are cold:

if the vehicle has been parked without

direct sunlightonthe tires for at least three

hours and

if the vehicle has not been driven further

than 1 mile (1.6 km)

Tread

The part of the tire that comes into contact

with the road.

Bead

The tire bead ensures that the tire sits

securely on the wheel. There are several steel

wires in the bead to prevent the tire from

coming loose from the wheel rim.

Sidewall

The part of the tire between the tread and the

bead.

Weight of optional extras

The combined weight of those optional extras

that weigh more than the replaced standard

parts and more than 2.3 kg (5 lbs). These

optional extras, such as high-performance

brakes, level control, a roof rack or a high-

performance battery, are not included in the

curb weight and the weight of the

accessories.

TIN (Tire Identification Number)

This is a unique identifier which can be used

by a tire manufacturer to identify tires, for

example for a product recall, and thus identify

the purchasers. The TIN is made up of the

manufacturer's identity code, tire size, tire

type code and the manufacturing date.

Load bearing index

The load bearing index (also load index) is a

code that contains the maximum load bearing

capacity of a tire.

Traction

Traction is the result of friction between the

tires and the road surface.

Treadwear indicators

Narrow bars (tread wear bars) that are

distributed over the tire tread. If the tire tread

is level with the bars, the wear limit of á in

(1.6 mm) has been reached.

Occupant distribution

The distribution of occupants in a vehicle at

their designated seating positions.

Total load limit

Nominal load and luggage load plus 68 kg

(150 lbs) multiplied by the number of seats in

the vehicle.

Definition of terms for tires and loading

333

Wheels and tires

Changing awheel

Flat tire

You can find information on whatto do in the

event of a flat tire in the "Flat tire" section

(Y page 297).

Information on driving with MOExtended tires

in the event of a flat tire can be found under

"MOExtended tires (tires with run-flat

characteristics" (Y page 297).

Rotating the wheels

WARNING

Interchanging the front and rear wheels may

severely impair the driving characteristics if

the wheels or tires have different dimensions.

The wheel brakes or suspension components

may also be damaged. There is a risk of

accident.

Rotate front and rear wheels only if the wheels

and tires are of the same dimensions.

On vehicles equipped with a tire pressure

monitor, electronic components are

located in the wheel.

Tire-mounting tools should not be used

near the valve. This could damage the

electronic components.

Only have tires changed at a qualified

specialist workshop.

Always observe the instructions and safety

notes in the "Mounting awheel" section

(Y page 334).

The wear patterns on the front and rear tires

differ, depending on the operating conditions.

Rotate the wheels before a clear wear pattern

has formed on the tires. Front tires typically

wear more on the shoulders and the rear tires

in the center.

If your vehicle's tire configuration allows, you

can rotate the wheels according to the

intervals in the tire manufacturer's warranty

book in your vehicle documents. If no

warranty book is available, the tires should be

rotated every 3,000 to 6,000 miles (5,000 to

10,000 km), or earlier if tire wear requires. Do

not change the direction of wheel rotation.

Clean the contactsurfacesofthe wheel and

the brake disc thoroughly every time a wheel

is rotated. Check the tire pressures.

Information on changing tires and mounting

the spare wheel (Y page 334).

Direction of rotation

Tires with a specified direction of rotation

have additional benefits, e.g. if there is a risk

of hydroplaning. You will only gain these

benefits if the correct direction of rotation is

maintained.

An arrow on the sidewall of the tire indicates

its correct direction of rotation.

Storing wheels

Store wheels that are not being used in a cool,

dry and preferably dark place. Protect the

tires from oil, grease, gasoline and diesel.

Cleaning the wheels

WARNING

The water jet from a circular jet nozzle (dirt

blasters) can cause invisible exterior damage

to the tires or chassis components.

Components damaged in this way may fail

unexpectedly. There is a risk of an accident.

Do not use power washers with circular jet

nozzles to clean the vehicle. Have damaged

tires or chassis components replaced

immediately.

Mounting awheel

Preparing the vehicle

Stop the vehicle on solid, non-slippery and

level ground.

Apply the parking brake.

334

Mounting awheel

Wheels and tires

Bring the front wheels into the straight-

ahead position.

Secure the vehicle against rolling away

(Y page 158).

Switch off the engine.

Vehicles without KEYLESS-GO: remove

the SmartKey from the ignition lock.

Vehicles with KEYLESS-GO: openthe

driver's door.

The on-board electronics have status 0,

which is the same as the SmartKey having

been removed.

Vehicles with KEYLESS-GO: remove the

Start/Stop button from the ignition lock

(Y page 142).

If included in the vehicle equipment,

remove the tire-change tool kit from the

vehicle.

Secure the vehicle to prevent it from rolling

away.

Securing the vehicle to prevent it

from rolling away

If your vehicle is equipped with a wheel chock,

it can be found in the tire-change tool kit

(Y page 296).

The folding wheel chock is an additional

safety measure to prevent the vehicle from

rolling away, for example when changing a

wheel.

Fold both plates upwards :.

Fold out lower plate ;.

Guide the lugs on the lower plate fully into

the openings in base plate =.

Securing the vehicle on level ground

On level ground: place chocks or other

suitable items under the front and rear of

the wheel that is diagonally opposite the

wheel you wish to change.

Securing the vehicle on slight downhill gradients

On light downhill gradients: place

chocks or other suitable items in front of

the wheels of the front and rear axle.

Raising the vehicle

WARNING

If you do not position the jack correctly at the

appropriate jacking point of the vehicle, the

jack could tip over with the vehicle raised.

There is a risk of injury.

Only position the jack at the appropriate

jacking point of the vehicle. The base of the

Mounting awheel

335

Wheels and tires

jack must be positioned vertically, directly

under the jacking point of the vehicle.

The following must be observed when raising

the vehicle:

to raise the vehicle, onlyuse the vehicle-

specific jack that has been tested and

approved by Mercedes-Benz.Ifused

incorrectly, the jack could tip over with the

vehicle raised.

the jack is designed only to raise and hold

the vehicle for a short time while a wheel

is being changed. It is not suited for

performing maintenance work under the

vehicle.

avoid changing the wheel on uphill and

downhill slopes.

before raising the vehicle, secure it from

rolling away by applying the parking brake

and inserting wheel chocks. Never

disengage the parking brake while the

vehicle is raised.

the jack must be placed on a firm, flat and

non-slip surface. On a loose surface, a

large, load-bearing underlay must be used.

On a slippery surface, a non-slip underlay

must be used, e.g. rubber mats.

do not use wooden blocks or similar

objects as a jack underlay.Otherwise, the

jack will not be able to achieve its load-

bearing capacity due to the restricted

height.

make sure thatthe distance between the

underside of the tires and the ground does

not exceed 1.2 inches (3 cm).

never place your hands and feet under the

raised vehicle.

never lie under the raised vehicle.

never start the engine when the vehicle is

raised.

never open or close a door or the trunk lid

when the vehicle is raised.

make sure that no persons are present in

the vehicle when the vehicle is raised.

The jack is designed exclusively for

jacking up the vehicle at the jacking points.

Otherwise, your vehicle could be damaged.

Using lug wrench :, loosen the bolts on

the wheel you wish to change by about one

full turn. Do not unscrew the bolts

completely.

The jacking points are located just behind the

wheel housings of the front wheels and just

in front of the wheel housings of the rear

wheels (arrows).

Position jack = at jacking point ;.

336

Mounting awheel

Wheels and tires

Make sure the foot of the jack is directly

beneath the jacking point.

Turn crank ? clockwise until jack = sits

completely on jacking point ; and the

base of the jack lies evenly on the ground.

Turn crank ? until the tire is raised a

maximum of 1.2 in (3 cm) from the ground.

Removing awheel

Do not place wheel bolts in sand or on a

dirty surface. The boltand wheel hub

threads could otherwise be damaged when

you screw them in.

Unscrew the wheel bolts.

Remove the wheel.

Mounting anew wheel

WARNING

Oiled or greased wheel bolts or damaged

wheel bolts/hub threads can cause the wheel

bolts to come loose.As a result, you could

lose a wheel while driving. There is a risk of

accident.

Never oil or grease wheel bolts. In the event

of damage to the threads, contact a qualified

specialist workshop immediately.Have the

damaged wheel bolts or hub threads

replaced/renewed. Do notcontinue driving.

WARNING

If you tighten the wheel bolts or wheel nuts

when the vehicle is raised, the jack could tip

over. There is a risk of injury.

Only tighten the wheel bolts or wheel nuts

when the vehicle is on the ground.

Always pay attention to the instructions and

safety notes in the "Changing a wheel"

section (Y page 334).

Only use wheel bolts that have been designed

for the wheel and the vehicle. For safety

reasons, Mercedes-Benz recommends that

you only use wheel bolts which have been

approved for Mercedes-Benz vehicles and the

respective wheel.

Be sure to use the original-length wheel bolts

when re-mounting the original wheel after it

has been repaired.

To prevent damage to the paintwork, hold

the wheel securely against the wheel hub

while screwing in the first wheel bolt.

Clean the wheel and wheel hub contact

surfaces.

Place the new wheel on the wheel hub and

push it on.

Tighten the wheel bolts until they are

finger-tight.

Mounting awheel

337

Wheels and tires

Lowering the vehicle

WARNING

The wheels could work loose if the wheel nuts

and bolts are not tightenedto the specified

tightening torque. There is a risk of accident.

Have the tightening torque immediately

checked at a qualified specialist workshop

after a wheel is changed.

Turn the crank of the jack counter-

clockwise until the vehicle is once again

standing firmly on the ground.

Place the jack to one side.

Tighten the wheel bolts evenly in a

crosswise pattern in the sequence

indicated (: to A). The tightening torque

must be 96 lb-ft (130 Nm).

Turn the jack back to its initial position and

store it together with the rest of the tire-

change tool kit in the trunk/cargo

compartment.

Transport the faulty wheel in the trunk/

cargo compartment.

Depending on the size of the wheel, you

may also be able to secure the defective

wheel in the spare wheel well. In this case,

you will have to remove the stowage well

casing from the spare wheel well and stow

it securely in the trunk/cargo

compartment.

Check the tire pressure of the newly

mounted wheel and adjust it if necessary.

Observe the recommended tire pressure

(Y page 313).

Vehicles with tire pressure monitor: all

wheels mounted must be equipped with

functioning sensors.

Wheel and tire combinations

General notes

For safety reasons, Mercedes-Benz

recommends that you only use tires and

wheels which have been approved by

Mercedes-Benz specifically for your

vehicle.

These tires have been specially adapted for

use with the control systems, such as ABS

or ESP

, and are marked as follows:

MO =Mercedes-BenzOriginal

MOE =Mercedes-BenzOriginal Extended

(tires featuring run-flat characteristics)

MO1 =Mercedes-BenzOriginal (only

certain AMG tires)

Mercedes-Benz Original Extended tires

may only be used on wheels that have been

specifically approved by Mercedes-Benz.

Only use tires, wheels or accessories

tested and approved by Mercedes-Benz.

Certain characteristics, e.g. handling,

vehicle noise emissions or fuel

consumption, may otherwise be adversely

affected. In addition, when driving with a

load, tire dimension variations could cause

the tires to come into contact with the

bodywork and axle components. This could

resultindamage to the tires or the vehicle.

Mercedes-Benzaccepts no liability for

damage resulting from the use of tires,

wheels or accessories otherthan those

tested and approved.

Information on tires, wheels and approved

combinations can be obtained from any

qualified specialist workshop.

Retreaded tires are neither tested nor

recommended by Mercedes-Benz, since

338

Wheel and tire combinations

Wheels and tires

previous damage cannot always be

detected on retreaded tires.As a result,

Mercedes-Benz cannot guarantee vehicle

safety if retreaded tires are mounted. Do

not mount used tires if you have no

information abouttheir previous usage.

i The recommended pressures for various

operating conditions can be found:

on the Tire and Loading Information

placard with the recommended tire

pressures on the B-pillar on the driver's

side

in the tire pressure table on the inside of

the fuel filler flap

Observe the notes on recommended tire

pressures under various operating

conditions (Y page 313).

Check tire pressures regularly, and only

when the tires are cold. Comply with the

maintenance recommendations of the tire

manufacturer in the vehicle document

wallet.

i Notes on the vehicle equipment –always

equip the vehicle with:

tires of the same size on a given axle

(left/right)

the same type of tires at a given time

(summer tires, winter tires, MOExtended

tires)

On the following pages, you can find

information on approved wheel rims and

tire sizes for equipping your vehicle with

winter tires. Winter tires are not available

at the factory as standard equipmentor

optional extras.

If you would like to equip your vehicle with

approved winter tires, you may also, in

certain circumstances, require rims of the

appropriate size. The size of the approved

winter tires may deviate from that of the

standard tires. This is dependent on the

model and the equipment installed at the

factory.

The tires and wheel rims, as well as further

information, can be obtained at a qualified

specialist workshop.

i Overview of abbreviations used in the

following tire tables:

BA: both axles

FA: front axle

RA: rear axle

In the following table, the wheel/tire

combinations are assigned to the vehicle

models through variants, e.g. V1, V2 etc.:

C 250

C 300

, C 300 4MATIC

C 350

, C 350 4MATIC

V4 C 63 AMG

Not all wheel and tire combinations are

available at the factory for all countries.

BlueEFFICIENCY

Wheel and tire combinations

339

Wheels and tires

Tires

Summer tires Alloywheels V1 V2 V3 V4

BA 225/45 R17 91 W

MOExtended

14, 15

7.5 J x 17 H2

Wheel offset: 1.85 in (47 mm)

# # #

—

225/45 R17 91 W

MOExtended

245/40 R17 91 W

MOExtended

14, 16

7.5 J x 17 H2

Wheel offset: 1.85 in (47 mm)

8.5 J x 17 H2

Wheel offset: 2.28 in (58 mm)

# # #

—

225/40 R18 92 Y XL

255/35 R18 94 Y XL

7.5 J x 18 H2

Wheel offset: 1.85 in (47 mm)

8.5 J x 18 H2

Wheel offset: 2.13 in (54 mm)

# # #

—

225/40 R18 92 Y XL

255/35 R18 94 Y XL

8.0 J x 18 H2

Wheel offset: 1.97 in (50 mm)

8.5 J x 18 H2

Wheel offset: 2.13 in (54 mm)

# # #

—

225/40 ZR18 92 YXL

255/35 ZR18 94 YXL

8.0 J x 18 H2

Wheel offset: 1.97 in (50 mm)

8.5 J x 18 H2

Wheel offset: 2.13 in (54 mm)

# # #

—

235/40 ZR18 95 YXL

255/35 ZR18 94 YXL

8.0 J x 18 H2

Wheel offset: 1.77 in (45 mm)

9.0 J x 18 H2

Wheel offset: 2.13 in (54 mm)

— — —

235/35 ZR19 XL

255/30 ZR19 XL

8.0 J x 19 H2

Wheel offset: 1.77 in (45 mm)

9.0 J x 19 H2

Wheel offset: 2.13 in (54 mm)

— — —

MOExtended tires (tires with run-flat characteristics) only in conjunction with an activated tire pressure loss

warning system or tire pressure monitor.

Not in conjunction with sports suspension code 486, dynamic handling package code 483 and Sports

package code 950/952.

Use of snow chains is not permitted.Observe the notes in the "Snow chains" section.

340

Wheel and tire combinations

Wheels and tires

All-weather tires Alloy wheels V1 V2 V3 V4

205/55 R16 91 H M+S

7.0 J x 16 H2

Wheel offset: 1.69 in (43 mm)

— — —

225/45 R17 91 H M+S

7.5 J x 17 H2

Wheel offset: 1.85 in (47 mm)

# #

— —

225/45 R17 91 H M+S

245/40 R17 91 H M+S

7.5 J x 17 H2

Wheel offset: 1.85 in (47 mm)

8.5 J x 17 H2

Wheel offset: 2.28 in (58 mm)

# # #

—

Winter tires Alloy wheels V1 V2 V3 V4

BA 205/55 R16 91 H

M+Si

7.0 J x 16 H2

Wheel offset: 1.69 in (43 mm)

— — —

BA 225/45 R17 91 H M+Si 7.5 J x 17 H2

Wheel offset: 1.85 in (47 mm)

# # #

—

BA 225/45 R17 91 H

M+SiMOExtended

7.5 J x 17 H2

Wheel offset: 1.85 in (47 mm)

# # #

—

BA 225/40 R18 92 V XL

M+Si

8.0 J x 18 H2

Wheel offset: 1.77 in (45 mm)

— — —

BA 235/40 R18 95 V XL

M+Si

8.0 J x 18 H2

Wheel offset: 1.77 in (45 mm)

— — —

235/40 R18 95 V XL

M+Si

255/35 R18 94 V XL

M+Si

8.0 J x 18 H2

Wheel offset: 1.77 in (45 mm)

9.0 J x 18 H2

Wheel offset: 2.13 in (54 mm)

— — —

C 300 4MATIC: not in conjunction with Sports package code 950/952.

Not in conjunction with sports suspension code 486, dynamic handling package code 483 and Sports

package code 950/952.

Use of snow chains is notpermitted. Observe the notes in the "Snow chains" section.

MOExtended tires (tires with run-flat characteristics) only in conjunction with an activated tire pressure loss

warning system or tire pressure monitor.

Wheel and tire combinations

341

Wheels and tires

"Minispare" emergency spare wheel

Tires Wheels V1 V2 V3 V4

T 125/90 R16 98 M

tire pressure: 420 kPa (4.2 bar/

61 psi)

3.5 B x 16 H2

Wheel offset: 0.79 in (20 mm)

— — —

T 125/80 R17 99 M

tire pressure: 420 kPa (4.2 bar/

61 psi)

3.5 B x 17 H2

Wheel offset: 0.79 in (20 mm)

—

# #

—

T 125/70 R18 99 M

tire pressure: 420 kPa (4.2 bar/

61 psi)

3.5 B x 18 H2

Wheel offset: 0.79 in (20 mm)

— — —

The specified tire pressure is printed in yellow on the emergency spare wheel.

Emergency spare wheel

Important safety notes

WARNING

The wheel or tire size as well as the tire type

of the spare wheel or emergency spare wheel

and the wheel to be replaced may differ.

Mounting an emergency spare wheel may

severely impair the driving characteristics.

There is a risk of an accident.

To avoid hazardous situations:

adaptyour driving style accordingly and

drive carefully.

never mount more than one spare wheel or

emergency spare wheel that differs in size.

only use a spare wheel or emergency spare

wheel of a different size briefly.

do not switch ESP

off.

have a spare wheel or emergency spare

wheel of a different size replaced at the

nearest qualified specialist workshop.

Observe that the wheel and tire dimensions

as well as the tire type must be correct.

When using an emergency spare wheel or

spare wheel of a different size, you must not

exceed the maximum speed of 50 mph

(80 km/h).

Snow chains must not be mounted on

emergency spare wheels.

General notes

You should regularly check the pressure of

the emergency spare wheel, particularly prior

to long trips, and correctthe pressure as

necessary (Y page 313). The applicable value

is found on the wheel or under "Technical

data" (Y page 338).

When you are driving with the collapsible

spare wheel mounted, the tire pressure

loss warning system or the tire pressure

monitor cannot function reliably. Only

restart the tire pressure loss warning

system/the tire pressure monitor when the

damaged wheel has been replaced with a

new wheel.

Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.

C 300 4MATIC: not in conjunction with Sports package code 950/952.

C 300 4MATIC: only in conjunction with Sports package code 950/952.

342

Emergency spare wheel

Wheels and tires

Vehicles with tire pressure monitor:

aftermounting an emergency spare wheel,

the system may still display the tire

pressure of the removed wheel for a few

minutes. The value displayed for the

mounted emergency spare wheel is not the

same as the current tire pressure of the

emergency spare wheel.

An emergency spare wheel may also be

mounted against the direction of rotation.

Observe the time restriction on use as well as

the speed limitation specified on the

emergency spare wheel.

Replace the tires after six years at the latest,

regardless of wear. This also applies to the

emergency spare wheel.

"Minispare" emergency spare wheel

The "Minispare" emergency spare wheel can

be found in the stowage well under the trunk

floor.

Lift the trunk floor upwards (Y page 260).

Remove tool kit tray :.

Turn stowage tray ; counter-clockwise

and remove it.

Remove "Minispare" emergencyspare

wheel =.

Always observe the instructions and safety

notes in the "Mounting awheel" section

(Y page 334).

Emergency spare wheel

343

Wheels and tires

Technical data

"Minispare"emergency spare wheel

Tires Wheels V1 V2 V3 V4

T 125/90 R16 98 M

Tire pressure: 420 kPa (4.2 bar/

61 psi)

3.5 B x 16 H2

Wheel offset: 0.79 in (20 mm)

— — —

T 125/80 R17 99 M

Tire pressure: 420 kPa (4.2 bar/

61 psi)

3.5 B x 17 H2

Wheel offset: 0.79 in (20 mm)

—

# #

—

T 125/70 R18 99 M

Tire pressure: 420 kPa (4.2 bar/

61 psi)

3.5 B x 18 H2

Wheel offset: 0.79 in (20 mm)

— — —

The specified tire pressure is printed in yellow on the emergency spare wheel.

Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.

C 300 4MATIC: not in conjunction with Sports package code 950/952.

C 300 4MATIC: only in conjunction with Sports package code 950/952.

344

Emergencyspare wheel

Wheels and tires

Wheels and tires for Your Mercedes C Class 4 Door Second Generation (2007-2013)

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