BMW Z4 Roadster, Owner'S Handbook Manual

Page: 270 / 344

After adjusting the tyre inflation
pressure
For Tyre Pressure Monitor TPM:
For tyres that cannot be found in the tyre infla‐
tion pressure inscriptions on the Control Display,
reset the Tyre Pressure Monitor TPM.
Speed code
Q = up to 160 km/h/100 mph
R = up to 170 km/h/106 mph
S = up to 180 km/h/112 mph
T = up to 190 km/h/118 mph
H = up to 210 km/h/131 mph
V = 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, approximately 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.
▷ Tyre inflation pressure insufficient.
▷ Vehicle overloading.
▷ Incorrect tyre storage.
Seite 270
MOBILITY
Wheels and tyres
270
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