Tire Rotation; Department Of Transportation Uniform Tire Quality Grades; Treadwear; Traction Grades - Dodge Charger SRT 392 2017 Owner's Manual

372 STARTING AND OPERATING
Rotation will increase tread life, help to maintain mud,
snow, and wet traction levels, and contribute to a smooth,
quiet ride.
Refer to the "Maintenance Schedule" for the proper main-
tenance intervals. The reasons for any rapid or unusual
wear should be corrected prior to rotation being per-
formed.

Tire Rotation

The suggested rotation method for vehicles equipped with
all season tires is the "rearward-cross" as shown in the
following diagram.
Tire Rotation
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 manu-
facturer in each category is shown on the sidewall of the
tires on your vehicle.
All passenger vehicle 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