DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following tire grading categories were established by
the National Highway Traffic Safety Administration. The
specific grade rating assigned by the tire’s manufacturer
in each category is shown on the sidewall of the tires on
your vehicle.
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
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 charac-
teristics and climate.
Traction Grades
The Traction grades, from highest to lowest, are AA, A, B,
and C. These 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 perfor-
mance.
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.
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IF YOU NEED CONSUMER ASSISTANCE
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Содержание 2012 Ram Truck Gas 1500
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Страница 7: ...INTRODUCTION 5 ...
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Страница 129: ...3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 127 ...
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Страница 181: ...Slow Tone Fast Tone 3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 179 ...
Страница 250: ...INSTRUMENT CLUSTER BASE 248 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Страница 251: ...INSTRUMENT CLUSTER PREMIUM 4 UNDERSTANDING YOUR INSTRUMENT PANEL 249 ...
Страница 369: ...Operating Tips 4 UNDERSTANDING YOUR INSTRUMENT PANEL 367 ...
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Страница 461: ...Understanding The Features Of Your Winch Winch Components 5 STARTING AND OPERATING 459 ...
Страница 503: ...STARTING AND OPERATING 501 ...
Страница 581: ...Jack And Tools 1500 Series Jack And Tools 2500 3500 Series 6 WHAT TO DO IN EMERGENCIES 579 ...
Страница 583: ...Folding Flap And Rolling Bag Tying Bag To Jack With Straps 6 WHAT TO DO IN EMERGENCIES 581 ...
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Страница 699: ...INDEX 10 ...
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