09 Wheels and tyres
09
311
WARNING
19-inch wheels must never be used on
cars that are not equipped with the R-
Design or Sport chassis options. The use
of 19-inch wheels on cars with standard
chassis constitutes a safety risk, with a
risk of vehicle damage, and it impairs the
car's driving characteristics.
Related information
•
Tyres - speed ratings (p. 311)
•
Tyres - load index (p. 311)
•
Tyres - direction of rotation (p. 306)
•
Tyres - maintenance (p. 306)
•
Tyres - approved tyre pressures (p. 396)
•
Wheel and wheel rim dimensions (p. 310)
Tyres - load index
Load index indicates a tyre's ability to carry a
certain load.
Each tyre has a certain capacity to carry a
load, a load index (LI). The car's weight deter-
mines the load capacity required of the tyres.
Minimum permissible index is indicated in the
load index table.
Related information
•
Tyres - dimensions (p. 310)
•
Tyres - approved tyre pressures (p. 396)
•
Tyres - speed ratings (p. 311)
•
Tyres - maintenance (p. 306)
Tyres - speed ratings
Each tyre can withstand a certain maximum
speed and therefore belongs to a particular
speed rating (SS - Speed Symbol).
Tyre speed class must at least correspond
with the car's top speed. Minimum speed rat-
ing is indicated in the speed rating table
below. The only exception to these regula-
tions is the winter tyre (p. 309)
1
, where a
lower speed rating may be used. If such a
tyre is chosen, the car must not be driven
faster than the speed rating of the tyre (for
example, class Q can be driven at a maxi-
mum of 160 km/h). Traffic regulations deter-
mine how fast a car can be driven, not the
speed rating of the tyres.
NOTE
The maximum permitted speed is speci-
fied in the table.
Q 160 km/h (used only on winter tyres)
T 190 km/h
H 210 km/h
V 240 km/h
1
Both metal-studded and studless tyres.
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