Mercedes-Benz C-Class 2008 Owners Manual - Manual (Page 351)

350
Operation
Tires and wheels
For additional information on tire load
rating, see “Load identification”
(
୴ page 352).
Tire speed rating
The tire speed rating 6 ( ୴ page 348)
indicates the approved maximum speed
for the tire.
Summer tires
ț 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,
Warning!
G
The tire load rating must always be at least
half of the GAWR ( ୴ page 357) of your vehi-
cle. Otherwise, tire failure may be the result
which may cause an accident and/or seri-
ous personal injury to you or others.
Always replace rims and tires with the same
designation, manufacturer and type as
shown on the original part.
Warning!
G
Do not overload the tires by exceeding the
specified load limit or total load limit as indi-
cated on the Tire and Loading Information
placard located on the driver’s door B-pillar
( ୴ page 334). Overloading the tires can
overheat them, possibly causing a blowout.
Overloading the tires can also result in han-
dling or steering problems, or brake failure.
i
Tire load rating 5 ( ୴ page 348) and tire
speed rating 6 ( ୴ page 348) are also referred
to as “service description”.
Warning!
G
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 ( ୴ page 348) and tire
speed rating 6 ( ୴ page 348) are also referred
to as “service description”.
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)