Tire Rotation Recommendations; Department Of Transportation Uniform Tire Quality Grades; Treadwear; Traction Grades - Jeep GLADIATOR 2022 Owner's Manual

346 SERVICING AND MAINTENANCE
TIRE ROTATION
RECOMMENDATIONS
The tires on the front and rear of your vehicle operate
at different loads and perform different steering, han-
dling, and braking functions. For these reasons, they
wear at unequal rates.
These effects can be reduced by timely rotation of tires.
The benefits of rotation are especially worthwhile with
aggressive tread designs such as those on On/Off Road
type tires. Rotation will increase tread life, help to main-
tain mud, snow, and wet traction levels, and contribute
to a smooth, quiet ride.
For the proper maintenance intervals
The reasons for any rapid or unusual wear should be
corrected prior to rotation being performed.
The suggested rotation method is the "rearward cross"
shown in the following diagram.
Tire Rotation (Rearward Cross)
Proper operation of four-wheel drive vehicles depends
on tires of equal size, type, and circumference on
each wheel. Any difference in tire size can cause
damage to the transfer case. Tire rotation schedule
should be followed to balance tire wear.
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES
page 300.
The following tire grading categories
were established by the National High-
way 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 vehicle tires must con-
form 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 con-
ditions on a specified government test
CAUTION!
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 rela-
tive performance of tires depends
upon the actual conditions of their
use, however, and may depart signifi-
cantly from the norm due to variations
in driving habits, service practices, and
differences in road characteristics 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 speci-
fied government test surfaces of
asphalt and concrete. A tire marked C
may have poor traction performance.