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.
9
IF YOU NEED CONSUMER ASSISTANCE
509
Summary of Contents for 2011 300 Limited
Page 1: ...300 O W N E R S M A N U A L 2 0 1 1 ...
Page 4: ......
Page 7: ...1 INTRODUCTION 5 ...
Page 10: ......
Page 139: ...Voice Tree 3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 137 ...
Page 140: ...138 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 145: ...Voice Tree 3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 143 ...
Page 146: ...144 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 147: ...3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 145 ...
Page 148: ...146 UNDERSTANDING THE FEATURES OF YOUR VEHICLE ...
Page 260: ...INSTRUMENT CLUSTER 258 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 314: ......
Page 359: ...5 STARTING AND OPERATING 357 ...
Page 408: ......
Page 430: ......
Page 502: ......
Page 513: ...INDEX 10 ...
Page 536: ...Chrysler Group LLC 11C481 126 AC Third Edition Printed in U S A ...