282 Vehicle care
Wheels and tyres
Tyre condition, wheel condition
Drive over edges slowly and at right
angles if possible. Driving over sharp
edges can cause tyre and wheel
damage. Do not trap tyres on the kerb
when parking.
Regularly check the wheels for
damage. Seek the assistance of a
workshop in the event of damage or
unusual wear.
Winter tyres
Winter tyres improve driving safety at
temperatures below 7 °C and should
therefore be fitted on all wheels.
In accordance with country-specific
regulations, affix the speed sticker in
the driver's field of view, if the tyre
speed code is below the maximum
speed of the vehicle.
All tyre sizes are permitted as winter
tyres 3 311.
Tyre designations
E.g. 225/55 R 18 98 V
225 : tyre width, mm
55 : cross-section ratio (tyre height
to tyre width), %
R : belt type: Radial
RF : type: RunFlat
18 : wheel diameter, inches
98 : load index e.g. 98 is equivalent
to 750 kg
V : speed code letter
Speed code letter:
Q : up to 160 km/h
S : up to 180 km/h
T : up to 190 km/h
H : up to 210 km/h
V : up to 240 km/h
W : up to 270 km/h
Choose a tyre appropriate for the
maximum speed of your vehicle.
Refer to the Certificate of Conformity
provided with your vehicle or other
national registration documents.
Optional equipment could reduce the
maximum speed of the vehicle.
Directional tyres
Directional tyres should be mounted
so that they rotate in the correct
direction. The proper rotation
direction is indicated by a symbol
(e.g. an arrow) on the sidewall.
Tyre pressure
Check the pressure of cold tyres at
least every 14 days and before any
long journey. Do not forget the spare
wheel. This also applies to vehicles
with tyre pressure monitoring system.
Tyre pressure 3 311.
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