Mercedes Benz 2009 M-Class User Manual

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 exam-
ple: 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 385) and the tire speed 

rating

6 (

컄

page 385).

If your tire includes “ZR” in the size 
designation and no service 
description

5 and 6 (

컄

page 385) is 

given, the tire manufacturer must be 
consulted for the maximum speed ca-
pability. 

If a service description

5 and 6 

(

컄

page 385) 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” designates 

the speed rating and the speed capabil-
ity 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 include 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 paren-
thesis designates the maximum speed 
capability of the tire as being above 
186 mph (300 km/h). Consult the tire 
manufacturer for the actual maximum 
permissible speed of the tire.

All-season and winter tires

Q M+S

1

1

or M+S

.for winter tires

up to 100 mph (160 km/h)

T

M+S

1

up to 118 mph (190 km/h)

H M+S

1

up to 130 mph (210 km/h)

V M+S

1

up to 149 mph (240 km/h)

i

.marking on the tire