Mercedes-Benz CL Operator's Manual page 474

Tire labeling
472
adapt your driving style to the traffic
conditions.
Summer tires
Index Speed rating
Q up to 100mph (160 km/h)
R up to 106mph (170 km/h)
S up to 112mph (180 km/h)
T up to 118mph (190 km/h)
H up to 130mph (210 km/h)
V up to 149mph (240 km/h)
W up to 168mph (270 km/h)
Y up to 186mph (300 km/h)
ZR...Y up to 186mph (300 km/h)
ZR...(..Y) over 186mph (300 km/h)
ZR over 149mph (240 km/h)
Optionally, tires with a maximum speed of
R
over 149 mph (240km/h) may have "ZR" in
the size description, depending on the
manufacturer (e.g. 245/40 ZR 18).
The service specification is made up of
load-bearing index A and speed rating
B.
If the size description of your tire includes
R
"ZR" and there are no service
specifications, ask the tire manufacturer in
order to find out the maximum speed.
If a service specification is available, the
maximum speed is limited according to the
speed rating in the service specification.
Example: 245/40 ZR 18 97 Y. In this
example, "97 Y" is the service specification.
The letter "Y" represents the speed rating
and the maximum speed of the tire is
limited to 186 mph (300km/h).
The size description for all tires with
R
maximum speeds of over 186mph
Or M+Si for winter tires.
20
(300km/h) must include "ZR", and the
service specification must be given in
brackets. Example: 275/40 ZR 18 (99 Y).
The speed rating "(Y)" indicates that the
maximum speed of the tire is over 186mph
(300km/h). Ask the tire manufacturer
about the maximum speed.
All-weather tires and winter tires
Index Speed rating
up to 100mph (160 km/h)
20
Q M+S
20 up to 118mph (190 km/h)
T M+S
up to 130mph (210 km/h)
20
H M+S
up to 149mph (240 km/h)
20
V M+S
i
Not all tires with the M+S marking provide
the driving characteristics of winter tires.
In addition to the M+S marking, winter tires
also have the i snowflake symbol on
the tire wall. Tires with this marking fulfill
the requirements of the Rubber
Manufacturers Association (RMA) and the
Rubber Association of Canada (RAC)
regarding snow traction, and were specially
developed for driving on snow.
An electronic speed limiter prevents your
vehicle from exceeding the following speeds:
130 mph (210 km/h):
R
all vehicles (except AMG vehicles)
-
155 mph (250 km/h)
R
CL 63 AMG
-
CL 65 AMG
-
186 mph (300 km/h)
R
CL 63 AMG (Performance Package)
-
CL 63 AMG with increased top speed
-
CL 65 AMG with increased top speed
-
The speed rating of tires mounted at the
factory may be higher than the maximum
speed that the electronic speed limiter
permits.