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Operation
Tires and wheels
For additional information on tire load
rating, see "Load identification"
( page 380).
i
Tire load rating 5 ( page 376) and
tire speed rating 6 ( page 376) are
also referred to as "service descrip-
tion".
378
Tire speed rating
The tire speed rating 6 ( page 376)
indicates the approved maximum speed
for the tire.
Warning!
Even when permitted by law, never operate
a vehicle at speeds greater than the
maximum speed rating of the tires.
Exceeding the maximum speed for which
tires are rated can lead to sudden tire
failure, causing loss of vehicle control and
possibly resulting in an accident and/or
personal injury and possible death, for you
and for others.
i
Tire load rating 5 ( page 376) and
tire speed rating 6 ( page 376) are
also referred to as "service descrip-
tion".
Summer tires
Index
Speed rating
Q
up to 100 mph (160 km/h)
R
up to 106 mph (170 km/h)
G
S
up to 112 mph (180 km/h)
T
up to 118 mph (190 km/h)
H
up to 130 mph (210 km/h)
V
up to 149 mph (240 km/h)
W
up to 168 mph (270 km/h)
Y
up to 186 mph (300 km/h)
(Y)
above 186 mph (300 km/h)
ZR
above 149 mph (240 km/h)
At the tire manufacturer's option, any
tire with a speed capability above
149 mph (240 km/h) can include a
"ZR" in the size designation (for exam-
ple: 245/40 ZR18). To determine the
maximum speed capability of the tire,
the service description for the tire must
be referred to. The service description
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