Vehicle Care
149
Tyre pressure values provided on the
tyre information label and tyre pressure
chart are valid for cold tyres, which
means at 20 °C.
The pressure increases by nearly 10 kPa
for a 10 °C temperature increase. This
must be considered when warm tyres are
checked.
position is indicated by markings on the
sidewall.
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The tyre pressure tables show all
possible tyre combinations.
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If there is more wear at the front than the
rear, swap round front wheels and rear
wheels periodically. If directional tyres
are mounted, ensure that the direction of
rotation of the wheels remains the same.
Tyres age, even if they are not used.
We recommend tyre replacement every 6
years.
For the tyres approved for your vehicle,
refer to the Certificate of Conformity
provided with your vehicle or other
national registration documents.
The driver is responsible for correct
adjustment of tyre pressure.
Tread Depth
Check tread depth at regular intervals.
For safety reasons, it is recommended
that the tread depth of the tyres on one
axle should not vary by more than 2 mm.
Changing Tire And Wheel Size
Warning
If tyres of a different size than those
fitted at the factory are used, it may be
necessary to reprogramme systems and
make other vehicle modifications.
Have the label with tyre pressures
replaced.
If the pressure is too low, this can
result in considerable tyre warm-up
and internal damage, leading to tread
separation and even to tyre blow-out at
high speeds.
Warning
Warning
The use of unsuitable tyres or wheels
may lead to accidents and will
For specific tyres the recommended
tyre pressure as shown in the
tyre pressure table may exceed the
maximum tyre pressure as indicated on
the tyre.
invalidate the vehicle operating permit.
Wheel Covers
Never exceed the maximum tyre
pressure as indicated on the tyre.
Wheel covers and tyres that are factory
approved for the respective vehicle and
comply with all of the relevant wheel and
tyre combination requirements must be
used.
The legally permissible minimum tread
depth (1.6 mm) has been reached when
the tread has worn down as far as one
of the tread wear indicators (TWI). Their
Temperature dependency
The tyre pressure depends on the
temperature of the tyre. During driving,
tyre temperature and pressure increase.