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Ov
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Controls
Operation
Maintenance
Dat
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K
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ord
Wheels and tyres
Use only BMW-approved tyres. In
view of the car's maximum speed,
certain makes and sizes are com-
pulsory. Details can be obtained from
BMW Service. Comply in addition with
any relevant national regulations.
The correct choice is made easier if
the meaning of the tyre markings is
understood. For radial-ply tyres, the
following markings apply:
The speed code letter indicates the
maximum permissible speed at which
the tyre is to be operated.
On summer tyres:
S
= up to 180km/h (app. 112 mile/h)
T
= up to 190km/h (app. 118 mile/h)
H = up to 210km/h (app. 130 mile/h)
V
= up to 240km/h (app. 149 mile/h)
ZR = over 240km/h (app. 149 mile/h)
W = up to 270km/h (app. 167 mile/h)
On winter tyres:
Q M+S= up to 160km/h (app. 99 mile/h)
T M+S= up to 190km/h (app. 118 mile/h)
H M+S= up to 210km/h (app. 130 mile/h)
Marks on light alloy wheels:
Tyre valves should be protected
against dirt entering by attaching
screw caps. Dirt in the tyre valve can
often lead to a gradual loss of air
pressure.
e.g.
235/50 R 16 95 W
Nominal width in
millimetres
Aspect ratio in
X
Code letter for radial ply
Rim diameter in inches
Load capacity figure
(not on ZR tyres)
Speed code letter
(ahead of the R on ZR tyres)
9
g
J x 18 AH 2
Rim width in
inches
Rim shoulder contour
code letter
Symbol for well-base rim
Rim diameter in inches
A
symmetric
H
ump
on
2
rim shoulders
Choosing the correct tyres
Online Edition for Part-No. 01 41 9 790 191 - © 12/98 BMW AG
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