||
WHEELS AND TYRES
540
Speed rating
Each tyre can withstand a certain maximum
speed. Tyre speed rating, SS (Speed Symbol),
must at least correspond with the car's top
speed. The table below shows the maximum per-
mitted speed for each speed rating (SS). The
only exception to these regulations is winter
tyres
2
, 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 (100 mph).) The top speed at which
the car can be driven depends on road condi-
tions, not the speed rating of the tyres.
NOTE
The maximum permitted speed is specified in
the table.
Q 160 km/h (100 mph) (used only on win-
ter tyres)
T 190 km/h (118 mph)
H 210 km/h (130 mph)
V 240 km/h (149 mph)
W 270 km/h (168 mph)
Y 300 km/h (186 mph)
WARNING
The lowest permitted load index (LI) and
speed rating (SS) for the tyres for each
respective engine variant are shown in the
car's registration document. If a tyre with too
low a load index or speed rating is used, it
may overheat and be damaged.
Related information
•
Tyres (p. 538)
•
Dimension designation for wheel rim
(p. 540)
Dimension designation for wheel
rim
Wheel and rim dimensions are designated in
accordance with the examples in the table
below.
The car has an approval for the complete vehicle
with certain combinations of wheel rims and
tyres.
All wheel rims have a dimension designation, for
example: 8Jx18x42.
8 Rim width in inches
J Rim flange profile
18 Rim diameter in inches
42 Off-set in mm (distance from wheel cen-
tre to wheel contact surface against the
hub)
Related information
•
Tyres (p. 538)
•
Dimension designation for tyre (p. 539)
2
Both those with metal studs and those without.
To Next Page
Loading...
