Designation Maximum speed
F up to 240 km/h/150 mph
W up to 270 km/h/167 mph
Y up to 300 km/h/186 mph
Tyre tread
Summer tyres
The tyre tread depth should not be less than
3 mm, 0.12 in, otherwise there is a high risk of
aquaplaning.
Winter tyres
The tyre tread depth should not be less than
4 mm, 0.16 in, otherwise the vehicle's suitability
for winter use is restricted.
Minimum tread depth
Wear displays are distributed across the tyre cir‐
cumference and have the legally prescribed min‐
imum height of 1.6 mm, 0.06 in.
The positions of the wear displays are identified
on the tyre's side wall by TWI, Tread Wear Indi‐
cator.
Tyre damage
General
Inspect tyres regularly for damage, the presence
of foreign bodies and wear.
Vehicle behaviour that may indicate tyre damage
or other faults:
▷ Unusual vibrations.
▷ Unusual tyre or running noises.
▷ Unusual vehicle response, such as pro‐
nounced pulling to the left or right.
Damage can be caused by the following situa‐
tions, for example:
▷ Driving over kerbs.
▷ Road damage.
▷ Insufficient tyre inflation pressure.
▷ Overloading the vehicle.
▷ Incorrect tyre storage.
Safety notes
WARNING
If the tyres are damaged, the tyre inflation pres‐
sure may be reduced, which in turn could
cause you to lose control of the vehicle. There
is a risk of accident. If you suspect tyre damage
while you are driving, immediately reduce
speed and bring the vehicle to a stop. Have the
wheels and tyres checked. To do so, carefully
drive to a Service Partner of the manufacturer
or another qualified Service Partner or a spe‐
cialist workshop. If necessary, have the vehicle
towed or transported there. Do not repair dam‐
aged tyres. Have them replaced.
WARNING
Tyres can become damaged by running over
obstacles, for example kerbs or road damage,
at high speed. Larger wheels have a smaller
tyre cross-section. The smaller the tyre cross-
section, the higher the risk of tyre damage.
There is a danger of accidents and damage to
property. If possible, drive around obstacles or
drive over them slowly and carefully.
Seite 338
MOBILITY
Wheels and tyres
338
Online Edition for Part no. xxx - VI/19
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