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– After adjusting the tyre pressures, always
screw the caps onto the valves and observe
the information on the tyre monitoring sys-
tem.
– Always use the tyre pressure specified on the
sticker. Never exceed the maximum tyre pres-
sure which is given on the sidewall of the tyre.
WARNING
If the tyre pressure is too low or too high, this
may cause the tyre to suddenly lose air or the
tyre to burst while the vehicle is in motion! This
can cause serious accidents and fatal injuries.
● If the tyre pressure is too low, it is possible
that the tyre temperature will increase to
such an extent when driving that the tread
peels off and the tyre bursts.
● Excessive speeds and overloading of the ve-
hicle can cause overheating, sudden tyre
damage including tyre bursts and detach-
ment of the tread.
● Whether the tyre pressure is too high or too
low, the tyres will wear prematurely and the
car will not handle well.
● Check tyre pressures regularly, at least once
a month, and before every long journey.
● Always adapt the tyre pressure to the corre-
sponding load level.
● Never reduce the increased tyre pressure of
warm tyres.
NOTICE
● When attaching the tyre pressure gauge, en-
sure that you do not position it at an angle to
the valve stem. Otherwise, the valve can be
damaged if the tyre pressure gauge is not used
with due care.
● Missing of the valve cap or improper fitting of
the valve cap may damage the tyre valve, al-
ways use the same size valve cover as the orig-
inal one and fit it correctly.
Under inflated tyres will result in increased
fuel consumption.
Tread depth and Tyre wear
Please refer to
at the start of the chapter
on page 184.
Fig. 147 Tyre tread: tread wear indicators (illustra-
tion)
Tread depth
Most driving situations require the highest possi-
ble tread depth. The tyres should have the same
tread depth, at the minimum on each axle. This is
especially true in wet or wintry road conditions.
In most countries, the minimum tread depth re-
quired by law is 1.6 mm, measured in the tread
grooves next to the tread wear indicators. Ob-
serve any deviating country-specific legal regula-
tions. The tyres should have the same tread
depth, at the minimum on each axle.
Observe any country-specific legal requirements
relating to the permissible minimum tread
depths for winter and all-year tyres.
Tread wear depth indicators in tyres
The tread wear indicators show if a tyre is worn
down. The tyre must be replaced at the latest
when the tread depth is just down to the tread
wear indicator.
There are 1.6 mm high wear indicators in the
tread base of the tyres.
tors are evenly distributed on the outer circum-
ference of the tyre, and markings on the tyre
sidewall indicate the position of the tread wear
indicator, (e.g."TWI" or other symbol)
WARNING
Worn tyres can lead to loss of control over the
vehicle, serious accidents and fatal injuries!
● Replace the tyres with new tyres at the lat-
est when the tyres are worn down to the
tread wear indicators.
Wheels and tyres
→
Fig. 147
Wear indica-
→
Fig.
147.
→
189
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