IF YOU NEED CONSUMER ASSISTANCE
473
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
significantly from the norm due to variations in driving
habits, service practices, and differences in road charac-
The follow ing tire grad ing categories were established by teristics and climate.
the National Highw ay Traffic Safety Administration. The
specific grad e rating assigned by the tire’s manu factu rer
in each category is show n on the sidewall of the tires on
you r vehicle.
Traction Grades
The Traction grad es, from highest to lowest, are AA, A, B,
and C. These grad es rep resent the tire’s ability to stop on
wet pavem ent, as measu red und er controlled cond itions
All passenger car tires must conform to Federal safety on specified governm ent test surfaces of asp halt and
requ irem ents in addition to these grad es.
concrete. A tire marked C may have poor traction perfor-
mance.
Treadwear
The Treadwear grad e is a comparative rating, based on
the wear rate of the tire when tested und er controlled
cond itions on a specified governm ent test course. For
exam ple, a tire grad ed 150 would wear one and one-half
times as well on the governm ent course as a tire grad ed
WARN ING!
The traction grad e assign ed to this tire is based on
straigh t-ah ead brak ing traction tests, and does not
include acceleration , corn erin g, hydrop lan ing, or
peak traction characteristics.
100.
The relative perform ance of tires depend s upon the
9
actu al cond itions of their use, how ever, and may depart
| Categories | Jeep Manuals, Jeep Wrangler Manuals |
|---|---|
| Model Year | 2009 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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