Loading ...
Loading ...
Loading ...
DOT
Tire
Quality
Grading
(U.S. Vehicles)
The
tires on your vehicle meet
all
U.S.
Federal Safety Requirements.
All
tires are also graded for
treadwear, traction, and temperature
performance according to
Department of Transportation
(DOT) standards.
The
following
explains these gradings.
Uniform Tire Quality Grading
Quality grades can be found where
applicable on the tire sidewall
between the tread shoulder and the
maximum section width. For
example:
Treadwear
200
TractionAA
Temperature A
246
Technical
Information
Treadwear
The
treadwear grade
is
a compara-
tive rating based on the wear rate of
the tire when tested under controlled
conditions on a specified government
test course. For example, a tire
graded
150
would wear one and one
half (1-1/2) times as well on the
government course as a tire graded
100.
The
relative performance of
tires depends upon
the
actual condi-
tions of their use, however, and may
depart significantly from the norm
due to variations
in
driving habits,
service practices, and differences in
road characteristics and climate.
Traction
The
traction grades, from highest to
lowest, are
AA,
A,
B,
and
C.
Those
grades represent the tire's ability to
stop on wet pavement as measured
under controlled conditions on
specified government
test
surfaces
of asphalt and concrete. A tire
marked C may have poor traction
performance.
Warning:
The
traction grade
assigned to this tire
is
based on
straight-ahead braking traction tests,
and does not include acceleration,
cornering, hydroplaning, or peak
traction characteristics.
Main Menu
Table of Contents
Loading ...
Loading ...
Loading ...