Mercedes-Benz

Notes on selecting, fitting and replacing tyres

WARNING Risk of accident due to incorrect 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.

Always replace wheels and tyres with those that fulfil the specifications of the original part.

When replacing wheels, make sure to fit the correct:

Designation
Type

When replacing tyres, make sure to fit the correct:

Designation
Manufacturer
Type

WARNING Risk of injury through exceeding the specified tyre load-bearing capacity or the permissible speed rating

Exceeding the load-bearing capacity of the tyres can lead to tyre damage and could cause the tyres to explode.

Therefore, only use tyre types and sizes approved for your vehicle model.

Observe the tyre load-bearing capacity rating and speed rating required for your vehicle.

NOTE Vehicle and tyre damage through tyre types and sizes that have not been approved

For safety reasons, only use tyres, wheels and accessories which have been specially approved by Mercedes-Benz for your vehicle.

These tyres are specially adapted to the control systems, such as ABS, ESP® and 4MATIC, and marked as follows:

MO = Mercedes-Benz Original
MOE = Mercedes-Benz Original Extended (run-flat tyres only for certain wheels)
MO1 = Mercedes-Benz Original (only certain AMG tyres)

Certain characteristics, such as handling, vehicle noise emissions, consumption, etc. may otherwise be adversely affected. Furthermore, other tyre sizes could result in the tyres rubbing against the body and axle components when loaded. This could result in damage to the tyre or the vehicle.

Only use tyres, wheels and accessories that have been checked and recommended by Mercedes-Benz.

NOTERisk to driving safety from retreaded tyres

Retreaded tyres are neither tested nor recommended by Mercedes-Benz, since previous damage cannot always be detected on retreaded tyres.

For this reason driving safety cannot be guaranteed.

Do not use used tyres if you have no information about their previous usage.

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.

Avoid obstacles or drive particularly carefully.

NOTE Possible wheel and tyre damage when parking on kerbs or in potholes

Parking on kerbs or in potholes may damage the wheels and tyres.

If possible, park only on flat surfaces.

Avoid kerbs and potholes when parking.

NOTE Damage to electronic component parts from the use of tyre-fitting tools

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 component parts.

Have the tyres changed at a qualified specialist workshop only.

NOTE Damage to summer tyres at low ambient temperatures

At low ambient temperatures, tears could form when driving with summer tyres, causing permanent damage to the tyre.

At temperatures below 7 °C, use M+S tyres.

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:

Suitability
Legal stipulations
Factory recommendations

WARNING Risk of accident with high performance tyres

There is an increased risk of skidding and aquaplaning when using sport tyres on wet roads.

In addition, the tyre grip is greatly reduced at a low outside temperature and tyre running temperature.

Activate ESP® and adapt your driving style accordingly.

Use M+S tyres at outside temperatures below 10 °C.

Only use the tyres for their intended purpose.

Observe the following when selecting, fitting and replacing tyres:

Country-specific requirements for tyre approval that define a specific tyre type for your vehicle.
Furthermore, the use of certain tyre types in certain regions and areas of operation can be highly beneficial.
Only use tyres and wheels of the same type (summer tyres, winter tyres, MOExtended tyres) and the same make.
Only fit wheels of the same size on one axle (left and right).
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.
Vehicles with a tyre pressure monitoring system: all fitted wheels must be equipped with functioning sensors for the tyre pressure monitoring system.
At temperatures below 7 °C use winter tyres or all-season tyres marked M+S for all wheels.
Winter tyres bearing the snowflake symbol in addition to the M+S marking provide the best possible grip in wintry road conditions.
For M+S tyres, only use tyres with the same tread.
Observe the maximum permissible speed for the M+S tyres fitted.
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.
Replace the tyres after six years at the latest, regardless of wear.
When 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 characteristics, e.g. winter tyres.

You can permanently limit the maximum vehicle speed for driving with winter tyres More.

For more information on wheels and tyres, contact a qualified specialist workshop.

Be sure to also observe the following further related subjects:

Notes on tyre pressure More
Tyre pressure table More
Notes on the emergency spare wheel More