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An electronic speed limiter prevents your
vehicle from exceeding a speed of 130 mph
(210 km/h).
Make sure that your tires have the required
speed rating. You can obtain information on the
required speed rating from an authorized
Mercedes-Benz Center.
Summer tires
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)
Index Speed rating
Y up to 186 mph (300 km/h)
ZR...Y
1
up to 186 mph (300 km/h)
ZR...(..Y)
1
over 186 mph (300 km/h)
ZR
1
over 149 mph (240 km/h)
R
Specifying the speed rating as the "ZR" index
in tire code 4 is optional for tires up to
186 mph (300 km/h).
R
If your tire code 4 includes "ZR" and there
is no speed rating 7, find out what the max‐
imum speed is from the tire manufacturer.
R
If load-bearing index 6 and speed rating 7
are in br ackets, the maximum speed rating of
your tire is above 186 mph (300 km/h). To
find out the maximum speed, ask the tire
manufacturer.
All-weather tires and winter tires
Index Speed rating
Q M+S
2
up to 100 mph (160 km/h)
T M+S
2
up to 118 mph (190 km/h)
H M+S
2
up to 130 mph (210 km/h)
V M+S
2
up to 149 mph (240 km/h)
Winter tires bear the i snowflake symbol
and fulfill the requirements of the Rubber Manu‐
facturers Association (RMA) and the Rubber
Association of Canada (RAC) regarding the tire
traction on snow.
Load index
8:
R
No specification given: standard load (SL)
tire
R
"XL" or "Extra Load": extra load tire or rein‐
forced tire
R
"Light Load": light load tire
1
"ZR" stated in the tire code.
2
Or "M+S i" for winter tires
Wheels and tires
435
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