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Wheel and tire combinations
The right choice
Use only wheels and tires
approved by BMW for the corre-
sponding vehicle model, as otherwise
the tires may make contact with the
body as the result of tolerances despite
the same nominal size being used,
resulting in serious accidents. If non-
approved wheels and tires are used,
BMW cannot evaluate their suitability,
and therefore cannot be held liable for
driving safety.
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For wheel and tire specifications
approved by BMW, refer to page
.
The correct wheel and tire combi-
nation affects different systems
that otherwise will not function
properly, e. g. ABS, DSC and Flat Tire
Monitor.
For this reason, use only Run-Flat Tires
of the same brand and tread pattern on
the vehicle and, for example, restore
the approved wheel and tire combina-
tion following a flat tire as soon as pos-
sible.
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Codes on tires and wheels
The codes on tires have the following
meaning.
Codes on radial tires:
The speed rating indicates the
approved maximum speed for the tire.
Summer tires:
S = up to 112 mph/180 km/h
T = up to 118 mph/190 km/h
H = up to 130 mph/210 km/h
V = up to 150 mph/240 km/h
W = up to 167 mph/270 km/h
Y = up to 186 mph/300 km/h
ZR= over 150 mph/240 km/h
For example:
Nominal width
in mm
Aspect ratio in
X
Radial tire code
Rim diameter in inches
Load rating –
not on ZR tires
Load rating
– before R on ZR tires
245/45 R
1
8 96 W
Winter tires:
Q M+S =
up to 100 mph/160 km/h
T M+S =
up to 118 mph/190 km/h
H M+S =
up to 130 mph/210 km/h
Codes on light-alloy wheels:
Protect tire valves from dirt by using
screw-on valve stem caps. Dirt in the
valves frequently leads to slow leaks.
Run-Flat Tires carry additional designa-
tion codes; these vary according to
manufacturer:
Bridgestone RFT
Dunlop
DSST
Goodyear
EMT
Michelin
ZP
Storage
Always store tires in a cool, dry place,
protecting them against light whenever
possible. Protect the tires against con-
tact with oil, grease and fuel.
For example:
Rim width
in inches
Code letter for
flange type
Symbol for full-drop
center rim
Rim diameter in inches
Hump on the 2 rim shoulders
8
x 18 EH2
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Online Edition for Part No. 01 41 0 156 878 - © 06/02 BMW AG
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