BMW 2001 325CI, Manual

Page: 135 / 215

135 n
Index
Data
Technology
Repairs
Car care
Controls
Overview
Wheel and tire combinations
The right choice
Use only BMW-approved tires, begin-
ning on page
137 .
Due to the high speeds this vehicle can
reach, the use of specific brands,
specifications and sizes is mandatory.
Consult any BMW center for details.
Comply with local/national regulations.
The correct wheel/tire combina-
tion has an effect on the different
systems such as ABS, ATC, ASC+T/
DSC
and ADB/DBC whose functioning
would be otherwise impaired if the
incorrect wheel/tire combinations were
used.
For this reason, use only tires of the
same manufacture and tread configura-
tion. In the event of a flat tire, for
example, remount the approved wheel/
tire combination as soon as possible.
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Codes on the tires and wheels
The tire codes will aid you in selecting
the correct tire.
The codes on radial tires:
The speed rating indicates the approved
maximum speed for the tire.
Summer tires:
S = up to112 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 187 mph (300 km/h)
ZR = over 150 mph (240 km/h)
Example:
Nominal width
in mm
Aspect ratio in
X
Radial tire ID code
Rim diameter in inches
Load rating
(not on ZR tires)
Speed rating
(before R on ZR tires)
225/50 R 16 92 W
Winter tires and all-season 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 stamped on light-alloy wheels:
Protect tire valve from dirt by using
screw-on valve stem caps. Dirt in the
valves frequently leads to slow leaks.
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
7 x 16 H 2 J