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Tire tread, Tire damage – BMW 328d xDrive Sports Wagon 2014 User Manual

Page 195

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sudden tire failure. The grade C corresponds
to a level of performance which all passenger
car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades Band
A represent higher levels of performance on
the laboratory test wheel than the minimum re‐
quired by law.

Temperature grade for this tire
The temperature grade for this tire is es‐

tablished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla‐
tion, or excessive loading, either separately or
in combination, can cause heat buildup and
possible tire failure.
If necessary, have the vehicle towed.◀

RSC – Run-flat tires

Run-flat tires, refer to page

197

, 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 depth of less than
0.12 in/3 mm.
There is an increased danger of hydroplaning if
the tread depth is less than 0.12 in/3 mm.

Winter tires

Do not drive with a tire tread depth of less than
0.16 in/4 mm.
Below a tread depth of 0.16 in/4 mm, tires are
less suitable for winter operation.

Minimum tread depth

Wear indicators are distributed around the
tire's circumference and have the legally re‐
quired minimum height of 0.063 in/1.6 mm.

They are marked on the side of the tire with
TWI, Tread Wear Indicator.

Tire damage

General information

Inspect your tires often for damage, foreign
objects lodged in the tread, and tread wear.

Notes

Driving over rough or damaged road surfaces,
as well as debris, curbs and other obstacles
can cause serious damage to wheels, tires and
suspension parts. This is more likely to occur
with low-profile tires, which provide less cush‐
ioning between the wheel and the road. Be
careful to avoid road hazards and reduce your
speed, especially if your vehicle is equipped
with low-profile tires.
Indications of tire damage or other vehicle de‐
fects:

Unusual vibrations during driving.

Unusual handling such as a strong ten‐
dency to pull to the left or right.

Damage can, e. g., be caused by driving over
curbs, road damage, or similar things.

Seite 195

Wheels and tires

Mobility

195

Online Edition for Part no. 01 40 2 925 793 - II/14

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