Mercedes-Benz CLA-Class 2014 Owners Manual - Manual (Page 331)

Temperature
G WARNING
The temperature grade for this tire is estab-
lished for a tire that is properly inflated and
not overloaded. Excessive speed, underinfla-
tion, 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 dis-
sipate 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 tempera-
ture 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.
Tire labeling
Overview of tire labeling
The following markings are on the tire in addition to
the tire name (sales designation) and the manu-
facturer's name:
:
Uniform tire Quality Grading Standard
(
Y
page 333)
; DOT, Tire Identification Number
(
Y
page 332)
= Maximum tire load (
Y
page 327)
? Maximum tire pressure (
Y
page 320)
A Manufacturer
B Tire material (
Y
page 333)
C Tire size designation, load-bearing capa-
city and speed index (
Y
page 330)
D Load index (
Y
page 332)
E Tire name
i Tire data is vehicle-specific and may devi-
ate from the data in the example.
Tire labeling
329
Whe
el
s
and
tire
s
Z