328
Operation
Tires and wheels
Tire speed rating
The tire speed rating 6 (컄 page 326)
indicates the approved maximum speed
for the tire.
i Tire load rating 5 (컄 page 326) and tire
speed rating 6 (컄 page 326) are also referred
to as “service description”.
Summer tires
앫 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 ex-
ample: 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 is comprised of the tire
load rating 5 (
컄 page 326) and the
tire speed rating 6 (
컄 page 326).
If your tire includes “ZR” in the size
designation and no service
description 5 and 6 (
컄 page 326) is
given, the tire manufacturer must be
consulted for the maximum speed ca-
pability.
If a service description 5 and 6
(
컄 page 326) is given, the speed capa-
bility is limited by the speed symbol in
the service description.
Example: 245/40 ZR18 97Y.
In this example, “97Y” is the service
description. The letter “Y” desig-
nates the speed rating and the speed
capability of the tire is limited to
186 mph (300 km/h).
앫 Any tire with a speed capability
above 186 mph (300 km/h) must in-
clude a “ZR” in the size designation
AND the service description must be
placed in parenthesis.
Example: 275/40 ZR 18 (99Y).
The “(Y)” speed rating in parenthesis
designates the maximum speed capa-
bility of the tire as being above 186
mph (300 km/h). Consult the tire
manufacturer for the actual maxi-
mum permissible speed of the tire.
Warning! G
Even when permitted by law, never oper-
ate 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.
Index Speed rating
Q up to 100 mph (160 km/h)
R up to 106 mph (170 km/h)
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)
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