Acura 2011 MDX User Manual download pdf (Page 578)

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 tread shoulder and

maximum section width. For

example:

Treadwear 200

Traction AA

Temperature A

All passenger car tires must conform

to Federal Safety Requirements in

addition to these grades.

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

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.

DOT Tire Quality Grading (U.S. Vehicles)

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