BMW 4 Coupe Series Manual page 320

MOBILITY
M+S
Winter and all-season tires with better cold
weather performance than summer tires.
Tire tread
Summer tires
Do not drive with a tire tread depth of less than
0.12 in/3 mm, otherwise there is an increased
risk of aquaplaning.
Winter tires
Do not drive with a tire tread of less than
0.16 in/4 mm, as such tires are less suitable for
winter operation.
Minimum tread depth
Wear indicators are distributed around the tire
circumference. These wear indicators have the
legally required minimum height of
0.063 in/1.6 mm.
The positions of the wear indicators are marked
on the tire sidewall with TWI, Tread Wear Indica‐
tor.
Tire damage
General information
Inspect your tires regularly for damage, foreign
objects lodged in the tread, and tread wear.
320
Wheels and tires
Online Edition for Part no. 01405A392C9 - VI/21
Driving over rough or damaged road surfaces, as
well as debris, curbs and other obstacles can
cause serious damage to wheels, tires and sus‐
pension parts. This is more likely to occur with
low-profile tires, which provide less cushioning
between the wheel and the road. Be careful to
avoid road hazards and reduce your speed, es‐
pecially if your vehicle is equipped with low-pro‐
file tires.
Indications of tire damage or other vehicle mal‐
functions:
▷ Unusual vibrations.
▷ Unusual tire or running noises.
▷ Unusual handling such as a strong tendency
to pull to the left or right.
Damage can be caused by the following situa‐
tions, for instance:
▷ Driving over curbs.
▷ Road damage.
▷ Tire pressure too low.
▷ Vehicle overloading.
▷ Incorrect tire storage.
Safety information
Warning
Damaged tires can lose tire inflation pressure,
which can lead to loss of vehicle control. There
is a risk of accident. If tire damage is suspected
while driving, immediately reduce speed and
stop. Have wheels and tires checked. For this
purpose, drive carefully to the nearest dealer's
service center or another qualified service cen‐
ter or repair shop. Have vehicle towed or trans‐
ported as needed. Do not repair damaged tires,
but have them replaced.