Get Wheels and tyres -> Wheel change Guide for Mercedes C Class 4 Door Fourth Generation (2014-2021)

Wheels and tyres 413

ing condition (/ page 411). Observe the

notes on tyre temperature (/ page 410).

On-board computer:

Wheel change

Notes on selecting, fitting and replacing

tyres

4

5

Service

Tyres

% The values displayed in the multifunction dis‐

play may deviate from those of the tyre pres‐

sure gauge as they refer to sea level. At high

elevations, the tyre pressure values indica‐

ted by a pressure gauge are higher than

those shown by the on-board computer. In

this case, do not reduce the tyre pressure.

#

Swipe downwards on Touch Control on the

left-hand side of the steering wheel.

The Use current tyre pressures as new refer-

ence values? message is shown in the multi‐

function display.

NOTE Mercedes-AMG vehicles

*

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

#

To restart, press Touch Control on the left-

hand side of the steering wheel.

Restarting the tyre pressure monitoring sys‐

tem

Requirements:

The Tyre press. monitor restarted message is

shown in the multifunction display.

Current warning messages are deleted and

the yellow h warning lamp goes out.

&

WARNING Risk of accident due to incor‐

rect dimensions of wheels and tyres

If wheels and tyres of the wrong size are

used, the wheel brakes or wheel suspension

components may become damaged.

R

The recommended tyre pressure is correctly

set for the respective operating status on all

After you have been driving for a few

of the wheels (/ page 410).

minutes, the system checks whether the cur‐

rent tyre pressures are within the specified

range. The current tyre pressures are then

accepted as reference values and monitored.

#

Always replace wheels and tyres with

Restart the tyre pressure monitoring system in

the following situations:

those that fulfil the specifications of the

original part.

R

The tyre pressure has changed.

The wheels or tyres have been changed or

newly fitted.

When replacing wheels, make sure to fit the

correct:

Be sure to also pay attention to the following

related topic:

R

Designation

R

Notes on tyre pressure (/ page 410)

R

Type

414 Wheels and tyres

When replacing tyres, make sure to fit the

correct:

Only use tyres, wheels and accessories that

have been checked and recommended by

Mercedes-Benz.

NOTE Vehicle and tyre damage through

tyre types and sizes that have not been

approved

*

R

Designation

R

Manufacturer

Type

For safety reasons, only use tyres, wheels

and accessories which have been specially

approved by Mercedes-Benz for your vehicle.

NOTE Risk to driving safety from retrea‐

ded tyres

*

R

Retreaded tyres are neither tested nor rec‐

ommended by Mercedes-Benz, since previ‐

ous damage cannot always be detected on

retreaded tyres.

For this reason driving safety cannot be guar‐

anteed.

These tyres are specially adapted to the con‐

trol systems, such as ABS, ESP^®and

4MATIC, and marked as follows:

&

WARNING Risk of injury through exceed‐

ing the specified tyre load-bearing capa‐

city or the permissible speed rating

R

MO = Mercedes-Benz Original

Exceeding the load-bearing capacity of the

tyres can lead to tyre damage and could

cause the tyres to explode.

R

MOE = Mercedes-Benz Original Extended

(run-flat tyres only for certain wheels)

#

Do not use used tyres if you have no

information about their previous usage.

R

MO1 = Mercedes-Benz Original (only cer‐

tain AMG tyres)

#

Therefore, only use tyre types and sizes

approved for your vehicle model.

#

Certain characteristics, such as handling,

vehicle noise emissions, consumption, etc.

may otherwise be adversely affected. Fur‐

thermore, other tyre sizes could result in the

tyres rubbing against the body and axle com‐

ponents when loaded. This could result in

damage to the tyre or the vehicle.

Observe the tyre load-bearing capacity

rating and speed rating required for

your vehicle.

NOTE Possible damage to wheels or

tyres when driving over obstacles

*

Large wheels have a lower tyre section width.

The lower the tyre section width, the greater

is the risk of damage to wheels or tyres when

driving over obstacles.

Wheels and tyres 415

#

Avoid obstacles or drive particularly

carefully.

In addition, the tyre grip is greatly reduced at

a low outside temperature and tyre running

temperature.

NOTE Damage to summer tyres at low

ambient temperatures

*

At low ambient temperatures, tears could

form when driving with summer tyres, caus‐

ing permanent damage to the tyre.

Activate ESP^®and adapt your driving

style accordingly.

#

NOTE Possible wheel and tyre damage

when parking on kerbs or in potholes

*

#

Use M+S tyres at outside temperatures

below 10 °C.

#

Parking on kerbs or in potholes may damage

the wheels and tyres.

At temperatures below 7 °C, use M+S

tyres.

#

Only use the tyres for their intended

purpose.

#

If possible, park only on flat surfaces.

Avoid kerbs and potholes when parking.

Accessory parts that are not approved for your

vehicle by Mercedes-Benz or are not being used

correctly can impair the operating safety.

Before purchasing and using non-approved

accessories, visit a qualified specialist workshop

and enquire about:

#

Observe the following when selecting, fitting and

replacing tyres:

NOTE Damage to electronic component

parts from the use of tyre-fitting tools

*

R

Country-specific requirements for tyre

approval that define a specific tyre type for

your vehicle.

Vehicles with a tyre pressure monitoring

system: electronic component parts are

located in the wheel. Tyre-fitting tools should

not be applied in the area of the valve.

The tools could damage the electronic com‐

ponent parts.

R

Suitability

Legal stipulations

Factory recommendations

R

Furthermore, the use of certain tyre types in

R

certain regions and areas of operation can

be highly beneficial.

R

Only use tyres and wheels of the same type

&

WARNING Risk of accident with high

performance tyres

(summer tyres, winter tyres, MOExtended

tyres) and the same make.

#

Have the tyres changed at a qualified

specialist workshop only.

There is an increased risk of skidding and

aquaplaning when using sport tyres on wet

roads.

R

Only fit wheels of the same size on one axle

(left and right).

416 Wheels and tyres

R

It is only permissible to fit a different wheel

size in the event of a flat tyre in order to

drive to the specialist workshop.

Do not make any modifications to the brake

system, the wheels or the tyres.

The use of shims or brake dust shields is not

permitted and may invalidate the vehicle's

general operating permit.

If the tyre's maximum speed is below that of

the vehicle, this must be indicated by an

appropriate label in the driver's field of

vision.

Run in new tyres at moderate speeds for the

first 100 km.

Tyre pressure table (/ page 411)

Notes on the emergency spare wheel

(/ page 423)

R

Notes on interchanging wheels

Replace the tyres after six years at the latest,

regardless of wear.

&

WARNING Risk of injury through differ‐

ent wheel sizes

^RVehicles with a tyre pressure monitoring

system: all fitted wheels must be equipped

with functioning sensors for the tyre pres‐

sure monitoring system.

^RWhen replacing with tyres that do not

feature run-flat characteristics: vehicles

with MOExtended tyres are not equipped

with a TIREFIT kit at the factory. Equip the

vehicle with a TIREFIT kit after replacing with

tyres that do not feature run-flat characteris‐

tics, e.g. winter tyres.

Interchanging the front and rear wheels can

severely impair the driving characteristics.

The disk brakes or wheel suspension compo‐

nents may also be damaged.

R

At temperatures below 7 °C use winter tyres

#

Only interchange the front and rear

or all-season tyres marked M+S for all

wheels.

wheels if the wheels and tyres have the

same dimensions.

% You can permanently limit the maximum

vehicle speed for driving with winter tyres

(/ page 196).

For more information on wheels and tyres, con‐

tact a qualified specialist workshop.

Winter tyres bearing the i snowflake

symbol in addition to the M+S marking pro‐

vide the best possible grip in wintry road

conditions.

Interchanging the front and rear wheels if the

wheels or tyres have different dimensions can

render the general operating permit invalid.

The wear patterns on the front and rear wheels

differ:

R

For M+S tyres, only use tyres with the same

tread.

Be sure to also observe the following further

related subjects:

R

Observe the maximum permissible speed for

the M+S tyres fitted.

R

Front wheels wear more on the shoulder of

the tyre

R

Notes on tyre pressure (/ page 410)

Wheels and tyres 417

R

Overview of the tyre-change tool kit

R

Rear wheels wear more in the centre of the

tyre

Centring pin

% The jack weighs approximately 2.1 kg.

The maximum load capacity of the jack can

be found on the sticker affixed to the jack.

The jack is maintenance-free. If there is a

malfunction, please contact a qualified spe‐

cialist workshop.

NOTE Mercedes-AMG vehicles

*

Do not drive with tyres that have too little tread

depth. This significantly reduces traction on wet

roads (aquaplaning).

On vehicles with the same front and rear wheel

size, you can interchange the wheels every

5,000 to 10,000 km, depending on the wear.

Ensure the direction of rotation is maintained for

the wheels.

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

The tyre-change tool kit is located under the

boot floor.

NOTE Plug-in hybrid

*

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

Observe the instructions and safety notes on

"Changing a wheel" when doing so

(/ page 418).

Apart from some country-specific variants, vehi‐

cles are not equipped with a tyre-change tool kit.

For more information on which tyre-changing

tools are required and approved for performing a

wheel change on your vehicle, consult a qualified

specialist workshop.

Notes on storing wheels

When storing wheels, observe the following

notes:

R

After removing wheels, store them in a cool,

dry and preferably dark place.

You require the following tools, for example, to

change a wheel:

1

2

3

Wheel wrench

Folding chock

Jack

R

Protect the tyres from contact with oil,

grease or fuel.

R

Jack

Chock

R

Wheel wrench

418 Wheels and tyres

#

Preparing the vehicle for a wheel change

Requirements:

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.

Remove the hub caps if necessary

(/ page 418).

R

The required tyre-change tool kit is available.

#

If your vehicle is not equipped with the tyre-

change tool kit, consult a qualified specialist

workshop to find out about suitable tools.

Raise the vehicle (/ page 419).

R

The vehicle is not on a slope.

Removing and fitting hub caps

Requirements:

R

The vehicle is on solid, non-slippery and level

ground.

#

To remove: using both hands, carefully reach

into two wheel trim openings and remove the

wheel trim.

R

The vehicle is prepared for a wheel change

(/ page 418).

#

Apply the electric parking brake manually.

Move the front wheels to the straight-ahead

position.

Vehicles with manual transmission:

engage first or reverse gear.

Vehicles with automatic transmission:

shift into position j.

Vehicles with level control system: set the

normal vehicle level (/ page 209).

Switch off the engine.

Make sure that the engine cannot be started.

#

Vehicles with steel wheels

The wheel trim covers the wheel bolts. Before

unscrewing the wheel bolts, remove the wheel

trim.

Plastic hub cap

#

To remove: turn the centre cover of the hub

cap anti-clockwise and remove the hub cap.

To fit: make sure that the centre cover of the

hub cap is turned anti-clockwise.

Position the hub cap and turn the centre

cover clockwise until the hub cap engages

physically and audibly.

#

Wheels and tyres 419

Aluminium hub cap

R

There are no persons in the vehicle.

The vehicle has been prepared for a wheel

change (/ page 418).

R

The hub caps have been removed

(/ page 418).

Important notes on using the jack:

R

Use only a vehicle-specific jack that has

been approved by Mercedes-Benz to raise

the vehicle.

The jack is only designed for raising and

holding the vehicle for a short time while a

wheel is being changed and not for mainte‐

nance work under the vehicle.

Rules of conduct when the vehicle is raised:

R

Never place your hands or feet under the

vehicle.

#

To remove: position socket 2 from the tyre-

change tool kit on hub cap 1.

R

Never lie under the vehicle.

#

Position wheel spanner 3 on socket 2.

R

The jack must be placed on a firm, flat and

non-slip surface. If necessary, use a large,

flat, load-bearing, non-slip underlay.

The foot of the jack must be positioned verti‐

cally under the jack support point.

R

Do not start the engine and do not release

#

Using wheel spanner 3, turn hub cap 1

the electric parking brake.

anti-clockwise and remove it.

R

Do not open or close any doors or the boot

lid.

#

To fit: follow the instructions above in

reverse order.

R

% Specified tightening torque: 25 Nm.

Raising the vehicle when changing a wheel

Requirements:

420 Wheels and tyres

#

Only position the jack at the appropri‐

ate jacking point of the vehicle. The

base of the jack must be positioned

vertically under the jacking point of the

vehicle.

NOTE Vehicle damage from the jack

*

If you do not position the jack correctly at

the appropriate jack support point of the

vehicle, the jack could tip over with the vehi‐

cle raised.

Position of jack support points

#

Using the wheel wrench, loosen the wheel

bolts on the wheel you wish to change by

about one full turn. Do not unscrew the bolts

completely.

NOTE Mercedes-AMG vehicles

#

*

The jack is designed exclusively for

jacking up the vehicle at the jack sup‐

port points.

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

&

WARNING Risk of injury from incorrect

positioning of the jack

If you do not position the jack correctly at

the appropriate jacking point of the vehicle,

the jack could tip with the vehicle raised.

Wheels and tyres 421

Removing a wheel

Requirements:

R

The vehicle is raised (/ page 419).

NOTE Mercedes-AMG vehicles

*

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

When changing a wheel, avoid applying any force

to the brake disks, since this could impair the

level of comfort when braking.

#

Screw centring pin 1 into the thread

instead of the wheel bolt.

Unscrew the remaining wheel bolts com‐

pletely.

Remove the wheel.

NOTE Damage to threading from dirt on

wheel bolts

*

#

Position support 2 of jack 4 on jack sup‐

port point 1.

Fit the new wheel (/ page 421).

#

Do not place wheel bolts in sand or on

a dirty surface.

Turn crank 3 clockwise until jack support

2 sits completely on jack support point 1

and the base of the jack lies evenly on the

ground.

Fitting a new wheel

Requirements:

#

Unscrew the uppermost wheel bolt com‐

pletely.

R

The wheel is removed (/ page 421).

#

Turn crank 3 until the tyre is raised a maxi‐

mum of 3 cm from the ground.

Loosen and remove the wheel (/ page 421).

422 Wheels and tyres

#

Observe the information on the choice of

Tighten the wheel bolts evenly in a diagonal

pattern in the order indicated until they are

finger-tight.

Unscrew and remove the centring pin.

Tighten the last wheel bolt until it is finger-

tight.

NOTE Mercedes-AMG vehicles

*

tyres (/ page 413).

#

Observe the notes in the Supplement.

You could otherwise fail to recognise

dangers.

For tyres with a specified direction of rotation,

an arrow on the side wall of the tyre indicates

the correct direction of rotation. Observe the

direction of rotation when fitting.

#

&

WARNING Risk of accident from losing a

wheel

#

Lower the vehicle (/ page 422).

#

Slide the wheel to be mounted onto the cen‐

tring pin and push it on.

Oiled, greased or damaged wheel bolt/wheel

nut threads or wheel hub/wheel mounting

bolt threads can cause the wheel bolts/

wheel nuts to come loose.

As a result, you could lose a wheel while driv‐

ing.

Lowering the vehicle after a wheel change

Requirements:

&

WARNING Risk of injury from tightening

wheel bolts and nuts

R

The new wheel has been fitted

(/ page 421).

If you tighten the wheel bolts or wheel nuts

when the vehicle is raised, the jack could tip.

#

To lower the vehicle: turn the crank of the

jack anti-clockwise until the vehicle is once

again standing firmly on the ground.

#

Only tighten wheel bolts or wheel nuts

when the vehicle is on the ground.

#

Never oil or grease the threads.

In the event of damage to the threads,

contact a qualified specialist workshop

immediately.

Have the damaged wheel bolts or dam‐

aged hub threads replaced.

Do not continue driving.

#

Be sure to observe the instructions and

safety notes on "Changing a wheel"

(/ page 413).

For safety reasons, only use wheel bolts

which have been approved by Mercedes-

Benz and for the wheel in question.

#

Wheels and tyres -> Wheel change for Your Mercedes C Class 4 Door Fourth Generation (2014-2021)

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