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U.S. Department of Transportation — Tire
quality grades: The U.S. Department of
Transportation requires Ford to give you the
following information about tire grades exactly
as the government has written it.
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
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 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 A B C
The traction grades, from highest to lowest, are
A, B, and C, and they 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 braking (straightahead) traction tests
and does not include cornering (turning)
traction.
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