Temperature Grades - Dodge RAM CHASSIS CAB2018 User Manual

fied government test surfaces of as-
phalt and concrete. A tire marked C
may have poor traction performance.
WARNING!
The traction grade assigned to this
tire is based on straight-ahead brak-
ing traction tests, and does not in-
clude acceleration, cornering, hy-
droplaning, or peak
characteristics.
208

Temperature Grades

The Temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat,
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can cause
traction
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 pas-
senger vehicle tires must meet under
the Federal Motor Vehicle Safety Stan-
dard No. 109. Grades B and A repre-
sent higher levels of performance on
the laboratory test wheel, than the
minimum required by law.
WARNING!
The temperature grade for this tire
is established for a tire that is prop-
erly inflated and not overloaded. Ex-
cessive speed, under-inflation, or
excessive loading, either separately
or in combination, can cause heat
buildup and possible tire failure.