2021 BMW X3 — Owner's Manual – Page #293

Posted on 14 Aug, 2020
Model: 2021 BMW X3
Pages: 368


File size: 6 MB

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high temperature can cause the material of the
tire to degenerate and reduce tire life, and exces‐
sive temperature can lead to sudden tire failure.
The grade C corresponds to a level of perform‐
ance which all passenger car tires must meet un‐
der the Federal Motor Vehicle Safety Standard
No. 109. Grades Band A represent higher levels
of performance on the laboratory test wheel than
the minimum required by law.
Warning
The temperature grade for this tire is estab‐
lished for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately or in com‐
bination, can cause heat buildup and possible
tire failure.
RSC – Run-flat tires
Run-flat tires, refer to page 296, are labeled with
a circular symbol containing the letters RSC
marked on the sidewall.
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 of less than
0.12 in/3 mm, otherwise there is an increased
risk of hydroplaning.
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's
circumference and have the legally required min‐
imum height of 0.063 inches/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.
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.
Seite 293
Wheels and tires
MOBILITY
293
Online Edition for Part no. 01405A10E93 - VI/20



 
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