Mercedes-Benz CLA-Class 2014 Owners Manual - Manual (Page 333)

adapt your driving style to the traffic condi-
tions.
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)
R
Optionally, tires with a maximum speed of
over 149 mph (240km/h) may have "ZR" in
the size description, depending on the
manufacturer (e.g. 245/40 ZR 18).
The service specifications consist of load
bearing index A and speed rating B.
R If the size description of your tire includes
"ZR" and there are no service specifica-
tions, 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 exam-
ple, "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).
R The size description for all tires with maxi-
mum speeds of over 186mph (300km/h)
must include "ZR", and the service specifi-
cation 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
Q M+S 3 up to 100mph (160 km/h)
T M+S 3 up to 118mph (190 km/h)
H M+S 3 up to 130mph (210 km/h)
V M+S 3 up to 149mph (240 km/h)
i Not all tires with the M+S marking provide
the driving characteristics of winter tires.
Winter tires have, in addition to the M+S
identification, the i snow flake symbol
on the tire sidewall. Tires with this marking
fulfill the requirements of the Rubber Man-
ufacturers Association (RMA) and the Rub-
ber Association of Canada (RAC) regarding
the tire traction on snow. They have been
especially developed for driving on snow.
An electronic speed limiter prevents your
vehicle from exceeding a speed of 130mph
(210km/h).
The speed rating of tires mounted at the fac-
tory may be higher than the maximum speed
that the electronic speed limiter permits.
Make sure that your tires have the required
speed rating, e.g. when buying new tires. The
required speed rating for your vehicle can be
found in the "Tires" section (
Y
page 340).
Further information about reading tire data
can be obtained from any qualified specialist
workshop.
3 Or M+Si for winter tires.
Tire labeling
331
Wh
eels
and
tires
Z