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Tyre wear and wheel change
Fig. 238 Tyre wear indicator / wheel change
Tyre wear increases in the following circumstances.
▶
Incorrect tyre pressures.
Driving style (e.g. fast cornering, rapid acceleration / braking).
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Incorrect wheel balancing (you should have the wheels balanced after chang-
▶
ing/repair tyres or if the steering "is drifting").
▶
Wheel alignment errors.
There are wear indicator markers in the tyre treads, indicating whether the
minimum permissible tread depth has been reached
should be regarded as worn out when this indicator is flush with the tread.
Markings on the walls of the tyres with the letters "TWI" or other symbols (e.g.
) indicate the position of the wear indicators.
To ensure uniform wear on all tyres, we recommend that you change the
wheels every 10 000 km, in line with the schedule
WARNING
Change the tyres at the latest when they are worn down to the wear indi-
■
cators - risk of accident.
Faulty wheel alignment affects handling - risk of accident.
■
Unusual vibrations or the vehicle "pulling " to one side could be a sign of
■
tyre damage. Reduce speed and stop! If there are no external signs of tyre
damage, seek the help of a specialist garage.
Spare wheel
The size of the spare wheel is identical to that of the vehicle factory installed
wheels.
212
General Maintenance
» Fig. 238
- . A tyre
» Fig. 238
- .
After changing the spare wheel, the tyre pressure should be adjusted.
In vehicles with tyre pressure monitoring, save the tyre pressure values in the
system
» page
184.
WARNING
If you get a puncture and a spare tyre has to be fitted with the opposite
■
direction of rotation, please drive with particular caution. The best proper-
ties of the tyre are no longer present in this situation.
If the dimensions or design of the spare wheel differ from the tyres fitted
■
to the vehicle (e.g. winter tyres or low-profile tyres), it must only be used
briefly in the event of a puncture and if an appropriately cautious style of
driving is adopted.
Emergency spare wheel
Only use this emergency spare wheel to reach the nearest specialist garage, as
it is not intended for permanent use.
A warning label is always placed on the rim of the temporary spare wheel.
Please note the following if you intend to use the temporary spare wheel.
Do not cover the warning sign.
▶
▶
Be particularly observant when driving.
▶
Inflate the temporary spare wheel to the maximum inflation pressure for the
vehicle
» page 211
(the prescribed tyre pressure of the spare wheel 125/70
R16 is 4.2 bar).
In vehicles with tyre pressure monitoring, save the tyre pressure values in the
system
» page
184.
WARNING
Never drive with more than one temporary spare wheel mounted!
■
Avoid full throttle acceleration, sharp braking and fast cornering when
■
driving with the temporary spare wheel.
Do not use snow chains on the temporary spare wheel.
■
Observe the instructions on the warning sign of the temporary spare
■
wheel.
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