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2009-03-23T09:22:52+01:00 - Seite 246
Version: 2.11.8.1
Tires and wheels
246
For example, a load rating of 91 corresponds
to a maximum load of 1356 lb (615 kg) the
tire is designed to support. See also
“Maximum tire load” (Y page 240) where the
maximum load associated with the load index
is indicated in kilograms and lbs.
Index
Speed rating
ZR...(..Y)
ZR
above 186 mph (300 km/h)
above 149 mph (240 km/h)
RAt the tire manufacturer’s option, any tire
with a speed capability above 149 mph
(240
For additional information on the load index,
see “Load identification” (Y page 247).
km/h) can include a “ZR” in the size
Speed symbol
G Warning!
Even when permitted by law, never operate a
vehicle at speeds greater than the maximum
speed rating of the tires.
designation (for example: 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
load indexA and speed symbolB.
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 serious
personal injury and possible death, for you
and for others.
If your tire includes “ZR” in the size
designation and no service description is
given, the tire manufacturer must be
consulted for the maximum speed
capability.
If a service description is given, the speed
capability is limited by the speed symbol in
the service description. Example:
Regardless of the tire speed rating, local
speed limits should be obeyed. Use prudent
driving speeds appropriate to prevailing
conditions.
Speed symbolB indicates the approved
maximum speed (tire speed rating) for the
tire.
245/40
ZR18 97Y. In this example, “97Y”
is the service description. The letter “Y”
designates the speed rating and the speed
capability of the tire is limited to 186 mph
(300 km/h).
Summer tires
RAny tire with a speed capability above
186
mph (300 km/h) must include a “ZR”
Index
Speed rating
in the size designation AND the service
description must be placed in parenthesis.
Example: 275/40 ZR 18 (99Y). The “(Y)”
speed symbol in parenthesis 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.
Q
up to 100 mph (160 km/h)
up to 106 mph (170 km/h)
up to 112 mph (180 km/h)
up to 118 mph (190 km/h)
up to 130 mph (210 km/h)
up to 149 mph (240 km/h)
up to 168 mph (270 km/h)
up to 186 mph (300 km/h)
up to 186 mph (300 km/h)
R
S
T
H
All-season and winter tires
V
Index
Speed rating
W
Q M+S14 up to 100 mph (160 km/h)
T M+S14 up to 118 mph (190 km/h)
Y
ZR...Y
14
or M+Sifor winter tires
| Categories | Mercedes-Benz Manuals, Mercedes-Benz R-Class Manuals |
|---|---|
| Tags | Mercedes Benz R350, Mercedes Benz R350 BlueTEC, Mercedes Benz V251 |
| Model Year | 2010 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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