Get Wheels and tires Guide for Mercedes B Class SUV Second Generation (2011-2017)

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 a risk of an acci-

dent.

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

A flat tire severely impairs the driving, steer-

ing and braking characteristics of the vehicle.

There is a risk of accident.

Tires without run-flat characteristics:

do not drive with a flat 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 warn-

ing notices on MOExtended tires (tires with

run-flat characteristics).

Accessories that are not approved for your vehi-

cle by Mercedes-Benz or are not being used cor-

rectly can impair the operating safety.

Before purchasing and using non-approved

accessories, visit a qualified specialist work-

shop and inquire about:

suitability

legal stipulations

factory recommendations

Further information regarding wheels and tires

can be found under "Wheel/tire combinations"

(Y page 279).

You can ask for information regarding permitted

wheel-tire combinations at an authorized

Mercedes-Benz Center.

Information on tire pressure can be found:

on the Tire and Loading Information placard

on the B-pillar on the driver's side

(Y page 266)

in the tire pressure table in the charge socket

flap (Y page 124)

under "Tire pressure" (Y page 260)

Operation

Information on driving

Check the tire pressure when the vehicle is

heavily laden and adjust prior to a trip.

While driving, pay attention to vibrations, noises

and unusual handling characteristics, e.g. pull-

ing to one side. This may indicate that the

wheels or tires are damaged. If you suspect that

a tire is defective, reduce your speed immedi-

ately. Stop the vehicle as soon as possible to

check the wheels and tires for damage. Hidden

tire damage could also be causing the unusual

handling characteristics. If you find no signs of

damage, have the tires and wheels checked at a

qualified specialist workshop.

When parking your vehicle, make sure that the

tires do not get deformed by the curb or other

obstacles. If they cannot be avoided, drive over

obstacles such as curbs slowly and at an obtuse

angle. Otherwise, you may damage the wheels

or tires.

Regular checking of wheels and tires

WARNING

Damaged tires can cause tire inflation pres-

sure 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.

Operation

257

Wheels and tires

Check wheels and tires for damage at least once

a month. Check wheels and tires after driving

off-road or on rough roads. Damaged wheels

can cause a loss of tire pressure. Pay particular

attention to damage such as:

cuts in the tires

punctures in the tires

tears in the tires

bulges on tires

deformation or severe corrosion on wheels

Regularly check the tire tread depth and the

condition of the tread across the whole width of

the tire (Y page 258). 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 par-

ticularly prior to long trips. Adjust the tire pres-

sure as necessary (Y page 260).

The service life of tires depends, among other

things, on the following factors:

Driving style

Tire pressure

Distance covered

Notes on 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 con-

ditions. There is a risk of accident.

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

may exhibit different levels of wear at differ-

ent 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.

Marking : shows where bar indicator ; for

tread wear is integrated into the tire tread.

Treadwear indicators (TWI) are required by law.

Six indicators are positioned on the tire tread.

They are visible once a tread depth of approx-

imately á in (1.6 mm) has been reached. If this

is the case, the tire is so worn that it must be

replaced.

Selecting, mounting and replacing

tires

WARNING

Exceeding the stated tire load-bearing capa-

city 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.

Only mount tires and wheels of the same type

and make.

Exception: it is permissible to install a differ-

ent type or make in the event of a flat tire.

Observe here the "MOExtended tires (tires

258

Operation

Wheels and tires

with run-flat characteristics)" section

(Y page 242).

Only mount tires of the correct size onto the

wheels.

Break in new tires at moderate speeds for the

first 60 miles (100 km). The new tires only

reach their full performance after this dis-

tance.

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.

MOExtended tires (tires with run-flat

properties)

With MOExtended tires (tires with run flat char-

acteristics), you can continue to drive your vehi-

cle even if there is a total loss of pressure in one

or more tires.

MOExtended tires may only be used in conjunc-

tion with an active tire pressure monitor and

only on wheels specifically tested by Mercedes-

Benz.

Notes on driving with MOExtended tires with a

flat tire (Y page 242).

Vehicles equipped with MOExtended tires are

not equipped with a TIREFIT kit at the factory. It

is therefore recommended that you additionally

equip your vehicle with a TIREFIT kit if you mount

tires that do not feature run-flat properties, e.g.

winter tires. A TIREFIT kit may be obtained from

a qualified specialist workshop.

Winter operation

General notes

Have your vehicle winter-proofed at a qualified

specialist workshop at the onset of winter.

Observe the notes in the "Changing a wheel"

section (Y page 275).

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.

WARNING

Damaged tires can cause tire inflation pres-

sure 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.

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

to function optimally in

winter. These tires have been developed specif-

ically for driving in snow.

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

wheels to maintain safe handling characteris-

tics.

Always observe the maximum permissible

speed specified for the M+S tires you have

mounted.

When you have mounted the M+S tires:

Check the tire pressures (Y page 260).

Restart the tire pressure monitor

(Y page 265).

Snow chains

WARNING

If snow chains are mounted on the rear

wheels, the snow chains could cause abrasion

Winter operation

259

Wheels and tires

to the vehicle body or to chassis components.

This could cause damage to the vehicle or the

tires. There is a risk of an accident.

To avoid hazardous situations:

never mount snow chains on the rear

wheels

only mount snow chains in pairs on the

front wheels.

On some tire sizes there is not enough space

for snow chains. To avoid damage to the vehi-

cle or tires, observe the "Wheel and tire com-

binations" section under "Tires and wheels".

For safety reasons, Mercedes-Benz recom-

mends 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. For more information,

please contact a qualified specialist workshop.

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 279).

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).

Do not use Parking Pilot when snow chains

are installed (Y page 142).

You may wish to deactivate ESP

(Y page 62)

when pulling away with snow chains installed .

You can thereby allow the wheels to spin in a

controlled manner, achieving an increased driv-

ing force (cutting action).

Tire pressure

Tire pressure specifications

Important safety notes

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 steer-

ing and braking, may be greatly impaired.

There is a risk of an accident.

Follow recommended tire inflation pressures

and check the pressure of all the tires includ-

ing 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 data on the Tire and Loading Informa-

tion placard and tire pressure table shown

here are examples. Tire pressure specifica-

tions are vehicle-specific and may deviate

from the data shown here. The tire pressure

specifications that are valid for your vehicle

can be found on the Tire and Loading Infor-

mation placard and tire pressure table on the

vehicle.

General notes

The recommended tire pressures for the tires

mounted at the factory can be found on the

labels described here.

Further information on tire pressures can be

obtained at a qualified specialist workshop.

260

Tire pressure

Wheels and tires

Tire and Loading Information placard

Recommended tire pressures

The Tire and Loading Information placard is on

the B-pillar on the driver's side (Y page 266).

The Tire and Loading Information placard con-

tains the recommended tire pressures for cold

tires. The recommended tire pressures are valid

for the maximum permissible load and up to the

maximum permissible vehicle speed.

Tire pressure table

The tire pressure table is on the inside of the

charge socket flap. It shows the tire pressure for

all tires permitted at the factory for this vehicle;

see illustration (example).

The tire pressure table contains the recommen-

ded pressures for cold tires for various operat-

ing conditions, i.e. differing load and speed con-

ditions.

If a tire size precedes a tire pressure, the fol-

lowing tire pressure information is only valid for

that tire size; see illustration (example).

The load conditions "partially laden" and "fully

laden" are defined in the table for different num-

bers of occupants and amounts of luggage. The

actual number of seats may differ.

Some tire pressure tables show only the rim

diameters instead of the full tire size, e.g. R18.

Rim diameter is part of the tire size and can be

found on the tire sidewall (Y page 270).

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 speeds

The tire pressures for increased loads and/

or higher road speeds, shown in the tire pres-

sure table, may have a negative effect on driv-

ing comfort.

If the tire pressure is not set correctly, this can

lead to an excessive build up of heat and a sud-

den loss of pressure.

For more information, contact a qualified spe-

cialist workshop.

Tire pressure

261

Wheels and tires

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, con-

tact 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 pres-

sure 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.

Use a suitable pressure gauge to check the tire

pressure. The outer appearance of a tire does

not permit any reliable conclusion about the tire

pressure. You can also check the tire pressure

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 pres-

sures when the tires are cold.

The tires are cold:

if the vehicle has been parked with the tires

out of direct sunlight for at least three hours

and

if the vehicle has been driven less 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 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. Only correct the tire pressure if it is

too low for the current operating conditions. If

you 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 in the charge socket

flap (Y page 124)

Underinflated or overinflated tires

Underinflated tires

WARNING

Tires with pressure that is too low can over-

heat and burst as a consequence. In addition,

they also suffer from excessive and/or irreg-

ular wear, which can severely impair the brak-

ing 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:

overheat, leading to tire defects

adversely affect handling

wear excessively and/or unevenly

have an adverse effect on energy consump-

tion

Overinflated tires

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.

262

Tire pressure

Wheels and tires

Overinflated tires may:

increase the braking distance

adversely affect handling

wear excessively and/or unevenly

have an adverse effect on ride comfort

be more susceptible to damage

Maximum tire pressures

Example: maximum permissible tire pres-

sure

Never exceed the maximum permissible tire

inflation pressure. Always observe the recom-

mended tire pressure for your vehicle when

adjusting the tire pressure (Y page 260).

The actual values for tires are vehicle-spe-

cific and may deviate from the values in the

illustration.

Checking the tire pressures

Important safety notes

Observe the notes on tire pressure

(Y page 260).

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

in the tire pressure table in the charge socket

flap (Y page 124)

in the "Tire pressure" 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 to the

recommended value on the Tire and Loading

Information placard or the tire pressure table

(Y page 260).

If the tire pressure is too low, increase the tire

pressure to the recommended value.

If the tire pressure is too high, release air. To

do so, press down the metal pin in the valve,

using the tip of a pen for example. Then check

the tire pressure again using the tire pressure

checker.

Screw the valve cap onto the valve.

Repeat these steps for the other tires.

Tire pressure monitor

General notes

If a tire pressure monitor is installed, the vehi-

cle's wheels have sensors that monitor the tire

pressures in all four tires. The tire pressure mon-

itor warns you if the pressure drops in one or

more of the tires. The tire pressure monitor only

functions if the corresponding sensors are

installed in 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

Serv.Serv. menu of the multifunction

display, see illustration (example).

For information on the message display, refer to

the "Checking the tire pressure electronically"

section (Y page 265).

Tire pressure

263

Wheels and tires

Important safety notes

WARNING

Each tire, including the spare (if provided),

should be checked at least once every two

weeks 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 pres-

sure label on the inside of the fuel filler flap. If

your vehicle has tires of a different size than

the size indicated on the Tire and Loading

Information placard or, if available, 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 pres-

sure telltale when one or more of your tires

are significantly underinflated. Accordingly,

when the low tire pressure telltale lights up,

you should stop and check your tires as soon

as possible, and inflate them to the proper

pressure. Driving on a significantly underin-

flated tire causes the tire to overheat and can

lead to tire failure.

Underinflation also reduces fuel efficiency

and tire tread life, and may affect the 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 responsi-

bility to maintain correct tire pressure, even if

underinflation has not reached the level to

trigger illumination of the TPMS low tire pres-

sure telltale.

Your vehicle has also been equipped with a

TPMS malfunction indicator to indicate when

the system is not operating properly. The

TPMS malfunction indicator is combined with

the low tire pressure telltale. When the sys-

tem 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 vehi-

cle is started as long as the malfunction

exists. When the malfunction indicator is illu-

minated, 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 incom-

patible 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.

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 260). Note that the correct tire pressure

for the current operating situation must first be

taught-in to the tire pressure monitor. If a sub-

stantial loss of pressure occurs, the warning

threshold for the warning message is aligned to

the taught-in reference values. Restart the tire

pressure monitor after adjusting the pressure of

the cold tires (Y page 265). The current pres-

sures 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 260).

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

movements.

The tire pressure monitor has a yellow warning

lamp in the instrument cluster for indicating

pressure loss or a malfunction. 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 mal-

functioning.

if the warning lamp flashes for around a

minute and then remains lit constantly, the

tire pressure monitor is malfunctioning.

In addition to the warning lamp, a message

appears in the multifunction display. Observe

264

Tire pressure

Wheels and tires

the information on display messages

(Y page 185).

It may take up to ten minutes for a malfunction

of the tire pressure monitor to be indicated. A

malfunction will be indicated by the tire pres-

sure warning lamp 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 meas-

ured at a gas station with a pressure gauge. The

tire pressures shown by the on-board computer

refer to those measured at sea level. At high

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 tire pressure monitor can

be affected by interference from radio transmit-

ting equipment (e.g. radio headphones, two-way

radios) that may be being operated in or near the

vehicle.

Checking the tire pressure electroni-

cally

Make sure that the SmartKey is in position 2

in the ignition lock (Y page 109).

Press = or ; on the steering wheel to

select the

Serv.Serv.menu.

Press the 9 or : button to select

Tire PressureTire Pressure.

Press the a button.

The current tire pressure of each tire is shown

in the multifunction display.

If the vehicle was parked for longer than

20 minutes, the

Tire pressure will beTire pressure will be

displayed after driving a few minutes

message is shown.

After a teach-in process, the tire pressure mon-

itor 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

TireTire PressurePressure MonitorMonitor ActiveActive

message is shown instead of the tire pressure

display. The tire pressures are already being

monitored.

Tire pressure monitor warning mes-

sages

If the tire pressure monitor detects a pressure

loss in one or more tires, a warning message is

shown in the multifunction display. The yellow

tire pressure warning lamp then lights up.

If the

Please Correct Tire PressurePlease Correct Tire Pressure

message appears in the multifunction display,

the tire pressure in at least one tire is too low.

The tire pressure must be corrected when the

opportunity arises.

If the

Check Tire PressureCheck Tire Pressure message

appears in the multifunction display, the tire

pressure in one or more tires has dropped

significantly. The tires must be checked.

If the

TireTire PressurePressure WarningWarning TireTire Fail‐Fail‐

ure

ure message appears, the tire pressure in one

or more tires has dropped suddenly. The tires

must be checked.

Observe the instructions and safety notes in the

display messages in the "Tires" section

(Y page 185).

If the wheel positions on the vehicle are rotated,

the tire pressures may be displayed for the

wrong positions for a short time. This is rectified

after a few minutes of driving, and the tire pres-

sures are displayed for the correct positions.

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 cur-

rently set tire pressures as the reference values

for monitoring. In most cases, the tire pressure

monitor will automatically detect the new refer-

ence values after you have changed the tire

pressure. However, you can also set reference

values manually as described here. The tire

pressure monitor then monitors the new tire

pressure values.

Set the tire pressure to the value recommen-

ded for the corresponding driving situation on

the Tire and Loading Information placard on

the driver's side B-pillar (Y page 260).

Additional tire pressure for various operating

conditions can be found in the tire pressure

table in the charge socket flap (Y page 124).

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 (Y page 109).

Tire pressure

265

Wheels and tires

Press = or ; on the steering wheel to

select the

Serv.Serv. menu.

Press the 9 or : button to select

Tire PressureTire Pressure.

Press the a button.

The multifunction display shows the current

tire pressure for each tire or the

Tire pres‐Tire pres‐

sure

sure willwill bebe displayeddisplayed afterafter drivingdriving

a few minutesa few minutes message.

Press the : button.

The multifunction display shows the

UseUse

Current Pressures as New Reference

ValuesValues message.

If you wish to confirm the restart:

Press the a button.

The

TireTire Press.Press. MonitorMonitor RestartedRestarted mes-

sage 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 pres-

sures 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.

Radio type approval for the tire pres-

sure monitor

Country Radio type approval number

USA FCC ID: MRXMW2433A

FCC ID: MRXGG4

FCC ID: MRXMC34MA4

Canada IC: 2546A-MW2433A

IC: 2546A-GG4

IC: 2546A-MC34MA4

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 occu-

pants 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 iden-

tification 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 infor-

mation 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.

B-pillar, driver's side

266

Loading the vehicle

Wheels and tires

1500 lbs (680 kg). This is for illustration purposes only. Make sure you are using the actual load

limit for your vehicle stated on your vehicle's Tire and Loading Information placard (Y page 266).

The greater the combined weight of the occupants, the lower the maximum luggage load.

Step 1

Example 1 Example 2 Example 3

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)

Step 2

Example 1 Example 2 Example 3

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 occu-

pants

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)

Step 3

Example 1 Example 2 Example 3

Permissible load (maxi-

mum gross vehicle

weight rating from the

Tire and Loading Infor-

mation placard minus

the gross weight of all

occupants)

1500 lbs (680 kg) Ò

750 lbs (340 kg) =

750 lbs (340 kg)

1500 lbs (680 kg) Ò

540 lbs (245 kg)

=960 lbs (435 kg)

1500 lbs (680 kg) Ò

150 lbs (68 kg) =

1350 lbs (612 kg)

Vehicle identification plate

Even if you have calculated the total cargo care-

fully, 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 266).

268

Loading the vehicle

Wheels and tires

Permissible Gross Vehicle Weight Rating

(GVWR): the gross weight of the vehicle, all pas-

sengers, load and trailer load/noseweight (if

applicable) must not exceed the permissible

gross vehicle weight.

Gross Axle Weight Rating (GAWR): the maxi-

mum 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, occu-

pants, cargo, and full trailer load if applicable)

weighed on a suitable vehicle weighbridge.

All about wheels and tires

Uniform Tire Quality Grading Stand-

ards

Overview of Tire Quality Grading Stand-

ards

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 fac-

tors: : tread wear grade, ; traction grade and

= temperature grade. These regulations do not

apply to Canada. Nevertheless, all tires sold in

North America are provided with the corre-

sponding quality grading markings on the side-

wall of the tire.

Quality grades can be found, where applicable,

on the tire sidewall between tread shoulder and

maximum section width.

Example:

Treadwear grade: 200

Traction grade: AA

Temperature grade: A

All passenger car tires must conform to the stat-

utory safety requirements in addition to these

grades.

The actual values for tires are vehicle-spe-

cific and may deviate from the values in the

illustration.

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 cli-

mate.

Traction

WARNING

The traction grade assigned to this tire is

based on straight-ahead braking traction

tests, and does not include acceleration, cor-

nering, hydroplaning, or peak traction char-

acteristics.

Avoid wheelspin. This can lead to damage to

the drive train.

The traction grades – from highest to lowest –

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

tire's ability to stop on wet pavement as meas-

ured under controlled conditions on specified

government test surfaces of asphalt and con-

crete. A tire 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 condi-

tions when temperatures are around freezing

point.

Mercedes-Benz recommends a minimum tread

depth of ã in (4 mm) on all four winter tires.

All about wheels and tires

269

Wheels and tires

Observe the legally required minimum tire tread

depth (Y page 258). Winter tires can reduce the

braking distance on snow-covered surfaces in

comparison with summer tires. The braking dis-

tance is still much further than on surfaces that

are not icy or covered with snow. Take appro-

priate care when driving.

Further information on winter tires (M+S tires)

(Y page 259).

Temperature

WARNING

The temperature grade for this tire is estab-

lished for a tire that is properly inflated and

not overloaded. Excessive speed, underinfla-

tion, 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, representing the tire's resistance to the

generation of heat and its ability to dissipate

heat when tested under controlled conditions

on a specified indoor laboratory test wheel. Sus-

tained 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 C corresponds 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

Uniform Tire Quality Grading Standards

(Y page 274)

;

Department of Transportation, Tire Identifi-

cation Number (Y page 273)

Maximum load rating (Y page 272)

Maximum tire pressures (Y page 263)

Manufacturer

Tire material (Y page 273)

Tire size designation, load-bearing capacity

and speed rating (Y page 270)

Load index (Y page 272)

Tire name

The markings described above are on the tire in

addition to the tire name (sales designation) and

the manufacturer's name.

Tire data is vehicle-specific and may deviate

from the data in the example.

Tire size designation, load-bearing

capacity and speed rating

WARNING

Exceeding the stated tire load-bearing capa-

city 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

270

All about wheels and tires

Wheels and tires

tire load rating and speed rating required for

your vehicle.

Tire width

;

Nominal aspect ratio in %

Tire code

Rim diameter

Load bearing index

Speed rating

General: depending on the manufacturer's

standards, the size imprinted in the tire wall may

not contain any letters or may contain one letter

that precedes the size description.

If there is no letter preceding the size descrip-

tion (as shown above): these are passenger

vehicle tires according to European manufac-

turing standards.

If "P" precedes the size description: these are

passenger vehicle tires according to U.S. man-

ufacturing standards.

If "LT" precedes the size description: these are

light truck tires according to U.S. manufacturing

standards.

If "T" precedes the size description: compact

emergency wheels with high tire pressure that

are only designed for temporary use in an emer-

gency.

Tire width:tire width : shows the nominal tire

width in millimeters.

Aspect 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 diag-

onal 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 266).

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 272).

For further information on the load bearing

index, see "Load index" (Y page 272).

Speed rating:speed rating B specifies the

approved maximum speed of the tire.

Tire data is vehicle-specific and may deviate

from the data in the example.

Regardless of the speed rating, always observe

the speed limits. Drive carefully and 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

All about wheels and tires

271

Wheels and tires

the size description, depending on the man-

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

The service specification is made up of load-

bearing index A and speed rating B.

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 max-

imum speed is limited according to the speed

rating in the service specification. Example:

245/40 ZR18 97 Y. In this example, "97 Y" is

the service specification. The letter "Y" rep-

resents the speed rating. The maximum

speed of the tire is limited to 186 mph

(300 km/h).

The size description for all tires with maxi-

mum speeds of over 186 mph (300 km/h)

must include "ZR" and the service specifica-

tion must be given in parentheses. Example:

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

cates that the maximum speed of the tire is

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

ufacturer 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 require-

ments of the Rubber Manufacturers Associa-

tion (RMA) and the Rubber Association of

Canada (RAC) regarding the tire traction on

snow. They have been especially developed

for driving on snow.

An electronic speed limiter prevents your vehi-

cle from exceeding a speed of 100 mph

(160 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, e.g. when buying new tires. The

required speed rating for your vehicle can be

found in the "Tires" section (Y page 279).

Further information about reading tire data can

be obtained from any qualified specialist work-

shop.

Load index

In addition to the load-bearing index, load

index : may be imprinted after the letters that

identify speed rating on the sidewall of the tire.

Speed rating (Y page 270).

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

example above), represents a standard load

(SL) tire

XL or Extra Load: represents a reinforced tire

Light Load: 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

Tire data is vehicle-specific and may deviate

from the data in the example.

Maximum load rating

Or M+S i for winter tires.

272

All about wheels and tires

Wheels and tires

Maximum tire load : is the maximum permis-

sible weight for which the tire is approved.

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 266).

The actual values for tires are vehicle-spe-

cific and may deviate from the values in the

illustration.

DOT, Tire Identification Number (TIN)

US tire regulations stipulate that every tire man-

ufacturer or retreader must imprint a TIN in or on

the sidewall of each tire produced.

The TIN is a unique identification number. The

TIN enables the tire manufacturers or retreaders

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 identifica-

tion code ;, tire size =, tire type code ? and

manufacturing date A.

DOT (Department of Transportation): tire

symbol : marks that the tire complies with the

requirements of the U.S. Department of Trans-

portation.

Manufacturer identification code: manufac-

turer 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 279).

Tire size: identifier = describes the tire size.

Tire type code: tire type code ? can be used by

the manufacturer as a code 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 cal-

endar 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.

Tire data is vehicle-specific and may deviate

from the data in the example.

Tire characteristics

This information describes the type of tire cord

and the number of layers in sidewall : and

under tire tread ;.

Tire data is vehicle-specific and may deviate

from the data in the example.

Definition of terms for tires and loading

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

U S Department of Transportation.

Normal occupant weight

The number of occupants for which the vehicle

is designed multiplied by 68 kilograms (150 lbs).

All about wheels and tires

273

Wheels and tires

Uniform Tire Quality Grading Standards

A uniform standard to grade the quality of tires

with regards to tread quality, tire traction and

temperature characteristics. The quality grad-

ing assessment is made by the manufacturer

following specifications from the U.S. govern-

ment. The ratings are molded into the sidewall of

the tire.

Recommended tire pressures

The recommended tire pressure applies to the

tires mounted at the factory.

The Tire and Loading Information placard con-

tains the recommended tire pressures for cold

tires on a fully loaded vehicle and for the maxi-

mum permissible vehicle speed.

The tire pressure table contains the recommen-

ded pressures for cold tires for various operat-

ing conditions, i.e. differing load and speed con-

ditions.

Increased vehicle weight due to optional

equipment

The combined weight of all standard and

optional equipment available for the vehicle,

regardless of whether it is actually installed on

the vehicle or not.

Rim

This is the part of the wheel on which the tire is

mounted.

GAWR (Gross Axle Weight Rating)

The GAWR is the maximum gross 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 vehi-

cle weight rating GVWR as specified on the vehi-

cle 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 load limit

the weight of the factory installed optional

equipment

Kilopascal (kPa)

Metric unit for tire pressure. 6.9 kPa corre-

sponds to 1 psi. Another unit for tire pressure is

bar. 100 kilopascals (kPa) are the equivalent of

1 bar.

Load index

In addition to the load-bearing index, the load

index may also be imprinted on the sidewall of

the tire. This specifies the 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 sys-

tem and optional equipment if these are instal-

led in the vehicle, but does not include passen-

gers or luggage.

Maximum load rating

The maximum tire load is the maximum permis-

sible weight in kilograms or lbs 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.

274

All about wheels and tires

Wheels and tires

PSI (pounds per square inch)

A standard unit of measure for tire pressure.

Aspect ratio

Relationship between tire height and tire width

in percent.

Tire pressure

This is pressure inside the tire applying an out-

ward force to each square inch of the tire's sur-

face. 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.

Cold tire pressure

The tires are cold:

if the vehicle has been parked with the tires

out of direct sunlight 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-per-

formance 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 pur-

chasers. The TIN is made up of the manufactur-

er'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 capa-

city 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 distrib-

uted 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.

Changing a wheel

Flat tire

The "Breakdown assistance" section

(Y page 241) contains information and notes on

how to deal with a flat tire. Information on driv-

ing with MOExtended tires in the event of a flat

tire can be found under "MOExtended tires (tires

with run-flat characteristics" (Y page 242).

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 acci-

dent.

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.

Changing a wheel

275

Wheels and tires

Tire-mounting tools should not be used near

the valve. This could damage the electronic

components.

Only have tires changed at a qualified spe-

cialist workshop.

Observe the instructions and safety notes in the

"Changing a wheel" section (Y page 275).

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.

On vehicles that have the same size front and

rear wheels, you can rotate the wheels accord-

ing 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). Depending on tire wear, this may

be required earlier. Do not change the direction

of wheel rotation.

Clean the contact surfaces of the wheel and the

brake disc thoroughly every time a wheel is rota-

ted. Check the tire pressure and reactivate the

tire pressure monitor if necessary.

Direction of rotation

Tires with a specified direction of rotation have

additional benefits, e.g. if there is a risk of hydro-

planing. These advantages can only be gained if

the tires are installed corresponding to the

direction of rotation.

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

against oil and grease.

Mounting a wheel

Preparing the vehicle

Stop the vehicle on solid, non-slippery and

level ground.

Apply the electric parking brake manually.

Bring the front wheels into the straight-ahead

position.

Shift the transmission to position P.

Switch off the drive system.

Vehicles without KEYLESS-GO: remove the

SmartKey from the ignition lock.

Vehicles with KEYLESS-GO: open the driv-

er's door.

The vehicle electronics now have status 0.

This is the same as the SmartKey having been

removed.

If included in the vehicle equipment, remove

the tire-change tool kit from the vehicle.

Safeguard the vehicle against rolling away

(Y page 128).

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 241).

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 =.

276

Changing a wheel

Wheels and tires

Place chocks or other suitable items under

the front and rear of the wheel that is diago-

nally opposite the wheel you wish to change.

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 jack-

ing point of the vehicle. The base of the jack

must be positioned vertically, directly under

the jacking point of the vehicle.

Position a suitable jack correctly on the

intended jacking points. If you fail to position

the jack correctly, the vehicle may be dam-

aged.

The jacking points are recesses in the lower

door sill. They can only be seen from under-

neath. There is one located behind each of the

front wheel arches and in front of the rear

wheel arches.

Position the jack in the jacking points so that

when viewed from the side, the jack is in the

vertical position.

Position a suitable jack only on the jacking

points intended for this purpose.

Never position the jack on the high-voltage

battery. Do not jack up the vehicle on the

high-voltage battery. There is otherwise a risk

of damaging the high-voltage battery.

Also observe the notes in the "Changing a

wheel" section.

Observe the following when raising the vehi-

cle:

To raise the vehicle, only use the vehicle-spe-

cific jack that has been tested and approved

by Mercedes-Benz. If used 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 must not be used for performing

maintenance work under the vehicle.

Avoid changing the wheel on uphill and down-

hill slopes.

Before raising the vehicle, secure it from roll-

ing away by applying the parking brake and

inserting wheel chocks. Do not 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,

flat, 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 that the distance between the

underside of the tires and the ground does not

exceed 1.2 in (3 cm).

Never place your hands and feet under the

raised vehicle.

Do not lie under the vehicle.

Do not start the drive system when the vehicle

is raised.

Never open or close a door or the tailgate

when the vehicle is raised.

Make sure that no persons are present in the

vehicle when the vehicle is raised.

Changing a wheel

277

Wheels and tires

Using lug wrench :, loosen the bolts on the

wheel you wish to change by about one full

turn. Do not unscrew the bolts completely.

Jacking points

The jacking points are located just behind the

front wheel housings and just in front of the rear

wheel housings (arrows).

Take ratchet wrench ? out of the vehicle tool

kit and place it on the hexagon nut of jack =

so that the letters AUF are visible.

Position jack = at jacking point ;.

Make sure the foot of the jack is directly

beneath the jacking point.

Turn ratchet wrench ? until jack = sits

completely on jacking point ; and the base

of the jack lies evenly on the ground.

Turn ratchet wrench ? until the tire is raised

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

Removing a wheel

Do not place wheel bolts in sand or on a dirty

surface. The bolt and wheel hub threads could

otherwise be damaged when you screw them

in.

Unscrew the wheel bolts.

Remove the wheel.

Mounting a new 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 not continue 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 275).

Only use wheel bolts that have been designed

for the wheel and the vehicle. For safety rea-

sons, Mercedes-Benz recommends that you

only use wheel bolts which have been approved

for Mercedes-Benz vehicles and the respective

wheel.

To prevent damage to the paintwork, hold

the wheel securely against the wheel hub

while screwing in the first wheel bolt.

278

Changing a wheel

Wheels and tires

Clean the wheel and wheel hub contact sur-

faces.

Place the new wheel on the wheel hub and

push it on.

Tighten the wheel bolts until they are finger-

tight.

Lowering the vehicle

WARNING

The wheels could work loose if the wheel nuts

and bolts are not tightened to 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.

Place the ratchet wrench onto the hexagon

nut of the jack so that the letters AB are visi-

ble.

Turn the ratchet wrench 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 specified tightening torque is 96 lb-ft

(130 Nm).

Turn the jack back to its initial position.

Stow the jack and the rest of the vehicle tools

in the vehicle again.

Check the tire pressure of the newly mounted

wheel and adjust it if necessary.

Observe the recommended tire pressure

(Y page 260).

When you are driving with the emergency spare

wheel mounted, the tire pressure monitor can-

not function reliably. Only restart the tire pres-

sure monitor when the defective wheel has been

replaced with a new wheel. All wheels mounted

must be equipped with functioning sensors.

Vehicles with tire pressure monitor (USA

only): all mounted wheels must be equipped

with functioning sensors.

Wheel and tire combinations

General notes

You can ask for information regarding permitted

wheel/tire combinations at an authorized

Mercedes-Benz Center.

You should regularly check the pressure of the

emergency spare wheel, particularly prior to

long trips, and correct the pressure as neces-

sary (Y page 260). The value on the wheel is

valid.

For safety reasons, Mercedes-Benz recom-

mends 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-Benz Original

MOE = Mercedes-Benz Original Extended

(tires featuring run-flat characteristics)

MO1 = Mercedes-Benz Original (only cer-

tain AMG tires)

Mercedes-Benz Original Extended tires may

only be used on wheels that have been spe-

cifically 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 other-

Wheel and tire combinations

279

Wheels and tires

wise 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 result in damage to the tires or the vehi-

cle.

Mercedes-Benz accepts no liability for dam-

age resulting from the use of tires, wheels or

accessories other than those tested and

approved.

Information on tires, wheels and approved

combinations can be obtained from any quali-

fied specialist workshop.

Retreaded tires are neither tested nor rec-

ommended by Mercedes-Benz, since previ-

ous 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 about their previous

usage.

The recommended pressures for various oper-

ating conditions can be found:

on the Tire and Loading Information placard

on the B-pillar on the driver's side

in the tire pressure table in the charge socket

flap

Observe the notes on recommended tire pres-

sures under various operating conditions

(Y page 260).

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.

Notes on the vehicle equipment – always equip

the vehicle:

with tires of the same size on a given axle (left

and right)

with the same type of tire (summer tires,

MOExtended tires, winter tires)

Exception: it is permissible to install a differ-

ent type or make in the event of a flat tire.

Observe the "MOExtended tires (tires with

run-flat characteristics" section (Y page 242).

Vehicles equipped with MOExtended tires are

not equipped with a TIREFIT kit at the factory. It

is therefore recommended that you additionally

equip your vehicle with a TIREFIT kit if you mount

tires that do not feature run-flat properties, e.g.

winter tires. A TIREFIT kit may be obtained from

a qualified specialist workshop.

280

Wheel and tire combinations

Wheels and tires

Wheels and tires for Your Mercedes B Class SUV Second Generation (2011-2017)

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