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09 Wheels and tyres
09
317
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.
Related information
•
Tyres - dimensions (p. 316)
•
Tyres - speed ratings (p. 317)
•
Tyres - air pressure (p. 315)
•
Tyres - tread wear indicators (p. 315)
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 conditions
is winter tyres (p. 318) (both those with metal
studs and those without), 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 maximum of
160 km/h). Traffic regulations determine 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
W 270 km/h
Y 300 km/h
WARNING
The car must be fitted with tyres which
have the same or a higher load index
(p. 317) (LI) and speed rating (SS) than
specified. If a tyre with too low a load
index or speed rating is used, it may over-
heat.
Related information
•
Tyres - dimensions (p. 316)
•
Tyres - air pressure (p. 315)
•
Tyres - direction of rotation (p. 314)
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