The minimum permitted profile depth
been reached when the tyres have worn
down to the wear indicators. Replace the
›››
tyres with new ones
.
Changing wheels around
In order to wear the wheels in a uniform man-
ner, it is recommended to interchange them
regularly according to the diagram
›››
Fig.
168. The useful life of all the tyres will
then be about the same time.
WARNING
The tyres must be replaced at the latest
when the tread is worn down to the tread
wear indicators. Failure to follow this in-
struction could result in an accident.
Particularly in difficult driving conditions
●
such as wet or icy roads. It is important that
the tyre tread be as deep as possible and
be approximately the same on the tyres of
both the front and the rear axles.
The scant driving safety due to insuffi-
●
cient tread depth is particularly evident in
vehicle handling, when there is a risk of
"aquaplaning" in deep puddles of water
and when driving through corners, and
braking is also adversely affected.
1)
Follow the regulations of the country you are
driving in.
Wheels
1)
have
The speed has to be adapted according-
●
ly, otherwise there is a risk of losing control
over the vehicle.
Wheel bolts
The wheel bolts are matched to the rims.
When installing different wheels (for instance
alloy wheels or wheels with winter tyres) it is
important to use the correct wheel bolts with
the right length and correctly shaped bolt
heads. This ensures that wheels are fitted se-
curely and that the brake system functions
correctly.
The wheel bolts must be clean and turn easi-
ly.
A special adapter is required to turn the anti-
›››
theft wheel bolts*
WARNING
Wheel nuts should never be greased or
oiled.
Use only wheel bolts which belong to the
●
wheel.
If the prescribed torque of the wheel
●
bolts is too low, they could loosen whilst
the vehicle is in motion. Risk of accident! If
the tightening torque is too high, the wheel
bolts and threads can be damaged.
See
ded tightening torque for wheel nuts for
steel and alloy rims.
Winter tyres
Winter tyres must be fitted on all four
–
wheels.
Only use winter tyres that are approved for
–
your vehicle.
Please note that the maximum permissible
–
speed for winter tyres may be lower than
for summer tyres.
page
40.
Also note that winter tyres are no longer ef-
–
fective when the tread is worn down.
After fitting the wheels you must always
–
check the tyre pressures. When doing so,
take into account the correct tyre pressures
listed on the rear of the front left door frame
›››
In winter road conditions winter tyres will con-
siderably improve vehicle handling. The
CAUTION
›››
page 43
to find out the recommen-
page
191.
»
193