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209
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test course.
For example, a tire grade 150
would wear one and oneĆhalf
(1 1/2) times as well on the
government course as a tire grade
100. The relative performance of
tires depends upon the actual
conditions 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
AA A B C
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.
The traction grade assigned
to this tire is based on
straightĆahead braking traction
tests, and does not include
acceleration, cornering,
hydroplaning, or peak traction
characteristics.