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Wheels and tyres
Tread wear indicators indicate if a tyre is worn. Tyres must always be re-
placed before the tyre tread has worn to the level of the indicator.
WARNING
Driving with worn tyres is dangerous, and may lead to loss of control of
the vehicle with serious consequences.
● Tyres must be replaced before the wear indicators are at the same lev-
el as the tread pattern.
● Worn tyres have significantly reduced grip, especially on wet surfa-
ces, increasing the risk of "aquaplaning".
● Worn tyres make control of the vehicle more difficult in normal or dif-
ficult driving conditions, increasing the braking distance and the risk of
skidding.
Damaged tyres
Damage to wheels and tyres is often not immediately visible. If you notice
unusual vibration or the car pulling to one side, this may indicate that one
of the tyres is damaged ⇒
● Slow down immediately if you think you have a damaged wheel.
● Check the wheels and tyres for damage.
● If tyres are worn, stop driving and seek qualified assistance.
● If there is no visible exterior damage, drive slowly and carefully to the
nearest specialised workshop and have the vehicle checked.
Foreign bodies in the tyre
● Do not remove foreign bodies if they have penetrated through the tyre
wall!
● You should obtain professional assistance immediately.
.
Wear of tyres
The wear of tyres depends on a number of factors, for example:
● Driving style.
● Unbalanced wheels.
● Running gear settings.
Driving style: rounding bends at high speed and sudden acceleration or
braking speed up tyre wear. When the driving style is normal, if the tyres
wear too quickly, have the running gear settings checked at a specialised
workshop.
Wheel run-out: The wheels on new vehicles are balanced. However, certain
circumstances may lead to imbalance (run-out), which is detected as vibra-
tions in the steering wheel. Run-out leads to wear of the steering and sus-
pension. In the event of run out, the wheels should be balanced again.
When a new wheel is fitted, it should be balanced again.
Running gear settings: an incorrectly positioned running gear increases the
wear of tyres and affects your safety while driving. If tyres wear too quickly,
have the wheel alignment checked at a specialised workshop.
WARNING
If you notice unusual vibration or the car pulls to one side while driving,
this may indicate that one of the tyres is damaged.
● Reduce speed immediately and stop, while observing the highway
code.
● Check the wheels and tyres for damage.
● Never carry on driving on worn tyres or wheels. Request qualified as-
sistance immediately.
● If there is no visible exterior damage, drive slowly and carefully to the
nearest specialised workshop and have the vehicle checked.
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