Labeling (Overview) - Mercedes-Benz 2013 GL X166 Operator's Manual

All about wheels and tires
410
the tire's ability to stop on a wet surface as
measured under controlled conditions on
specified government test surfaces of asphalt
and concrete. A tire marked C may have poor
traction performance.
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) ( Y page 396).
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. These 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
Y
page 395). Winter tires can
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law.
Tire labeling
Overview
Uniform Tire Quality Grading Standard
:
( Y page 414)
DOT, Tire Identification Number
;
( Y page 413)
Maximum tire load (
=
Maximum tire pressure (
?
Manufacturer
A
Tire material ( Y page 414)
B
Tire size designation, load-bearing
C
capacity and speed index (
Load index ( Y page 413)
D
Tire name
E
The markings described above are on the tire
in addition to the tire name (sales
designation) and the manufacturer's name.
i Tire data is vehicle-specific and may
deviate from the data in the example.
Y page 413)
Y page 400)
Y page 411)