and differences in road characteristics and cli‐
mate.
M+S
Winter and all-season tires with better cold
weather performance than summer tires.
Traction
The traction grades, from highest to lowest, are
AA, A, B, and C.
Tire tread
Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test surfa‐
ces of asphalt and concrete. A tire marked C may
have poor traction performance.
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.
The traction grade assigned to this tire is based
on straight-ahead braking traction tests, and
does not include acceleration, cornering, hydro‐
planing, or peak traction characteristics.
Winter tires
Do not drive with a tire tread depth of less than
0.16
in/4 mm.
Temperature
Below a tread depth of 0.16 in/4 mm, tires are
less suitable for winter operation.
The temperature grades are A, the highest, B,
and C, representing the tire's resistance to the
generation of heat and its ability to dissipate
heat when tested under controlled conditions
on a specified indoor laboratory test wheel. Sus‐
tained high temperature can cause the material
of the tire to degenerate and reduce tire life, and
excessive temperature can lead to 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 required by law.
Minimum tread depth
Wear indicators are distributed around the tire's
circumference and have the legally required
minimum height of 0.063 in/1.6 mm.
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 pos‐
sible tire failure.
They are marked on the side of the tire with TWI,
Tread Wear Indicator.
Tire damage
If necessary, have the vehicle towed.◀
Inspect your tires often for damage, foreign ob‐
jects lodged in the tread, and tread wear.
RSC – Run-flat tires
Indications of tire damage or other vehicle de‐
fects:
Run-flat tires, refer to page 213, are labeled with
a circular symbol containing the letters RSC
marked on the sidewall.
▷
▷
Unusual vibrations during driving.
Unusual handling such as a strong tendency
to pull to the left or right.
211
Online Edition for Part no. 01 40 2 606 190 - 12 10 500
| Categories | BMW Manuals, BMW X3 Manuals |
|---|---|
| Tags | BMW F25, BMW X3 xDrive28, BMW X3 xDrive35 |
| Model Year | 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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