Mercedes-Benz Black Series Operator's Manual page 248

All about wheels and tires
246
The safe speed on a wet, snow covered or icy
road is always lower than on dry road
surfaces.
You should pay special attention to road
conditions when temperatures are around
freezing point.
Mercedes-Benz recommends a minimum
tread depth of ã in (4 mm) on all four winter
tires. Observe the legally required minimum
tire tread depth (
reduce the braking distance on snow-covered
surfaces in comparison with summer tires.
The braking distance is still much further than
on surfaces that are not icy or covered with
snow. Take appropriate care when driving.
Further information on winter tires (M+S
tires) ( page 234).
Y
Temperature
G
WARNING
The temperature grade for this tire is
established for a tire that is properly inflated
and not overloaded. Excessive speed,
underinflation, or excessive loading, either
separately or in combination, can cause
excessive heat build-up and possible tire
failure.
The temperature grades are A (the highest),
B, and C. They represent the tire's resistance
to the generation of heat and its ability to
dissipate heat when tested under controlled
conditions on a specified indoor laboratory
test wheel. Sustained high temperature can
cause the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire failure.
The grade C corresponds to a level of
performance which all passenger car tires
must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
page 233). Winter tires can
Y
Tire labeling
Overview
The following markings are on the tire in
addition to the tire name (sales designation)
and the manufacturer's name:
Uniform Tire Quality Grading Standard
:
( page 250)
Y
DOT, Tire Identification Number
;
( page 249)
Y
Maximum tire load (
=
Maximum tire pressure (
?
Manufacturer
A
Tire material ( page 250)
B
Y
Tire size designation, load-bearing
C
capacity and speed rating (
Load index ( page 249)
D
Y
Tire name
E
i
Tire data is vehicle-specific and may
deviate from the data in the example.
Tire size designation, load-bearing
capacity and speed rating
G
WARNING
Exceeding the stated tire load-bearing
capacity and the approved maximum speed
could lead to tire damage or the tire bursting.
There is a risk of accident.
page 249)
Y
page 238)
Y
page 246)
Y