DOT Tir e Qualit y Gradin g (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.
Unifor m Tir e Qualit y Gradin g
Quality grades can be found where applicable on the tire sidewall
between the tread shoulder and the maximum section width. For
example:
Treadwea r 20 0
Tractio n A A
Temperatur e ATreadwea r
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. Tractio
n
The traction grades, from highest to lowest, are AA, A, B, and C. Those
grades represent the tire's ability tostop 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 notinclude acceleration, cornering,
hydroplaning, or peak traction
characteristics.
Technica l Informatio n
