Tire Rotation Recommendations; Department Of Transportation Uniform Tire Quality Grades - Chrysler Pacifica 2018 Owner's Manual

554 SERVICING AND MAINTENANCE
CAUTION! (Continued)
• Observe the traction device manufacturer's instruc-
tions on the method of installation, operating speed,
and conditions for use. Always use the suggested
operating speed of the device manufacturer's if it is
less than 30 mph (48 km/h).
• Do not use traction devices on a compact spare tire.

Tire Rotation Recommendations

The tires on the front and rear of your vehicle operate at
different loads and perform different steering, driving, 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 aggres-
sive tread designs such as those on all season type tires.
Rotation will increase tread life, help to maintain mud,
snow and wet traction levels, and contribute to a smooth,
quiet ride.
Refer to the "Scheduled Servicing" for the proper mainte-
nance intervals. The reasons for any rapid or unusual wear
should be corrected prior to rotation being performed.
The suggested rotation method is the "forward cross"
shown in the following diagram. This rotation pattern does
not apply to some directional tires that must not be
reversed.
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.