Rotation; Match Mounting; Tire Wear Patterns; Tire Rotation Pattern - Jeep 200 Cherokee Service Manual

22 - 4 TIRES AND WHEELS
DIAGNOSIS AND TESTING (Continued)
Fig. 4 Tread Wear Indicators
1 – THREAD ACCEPTABLE
2 – THREAD UNACCEPTABLE
3 – WEAR INDICATOR
speeds. Note the noise level during acceleration,
deceleration and slight left and right steering inputs.

SERVICE PROCEDURES

ROTATION

Tires on the front and rear operate at different
loads and perform different steering, driving, and
braking functions. For these reasons they wear at
unequal rates and tend to develop irregular wear
patterns. These effects can be reduced by rotating
the tires at regular intervals. The benefits of tire
rotation are:
• Increase tread life
• Maintain traction levels
• A smooth, quiet ride
The suggested method of tire rotation is (Fig. 6).
Other rotation methods can be used, but they will
not provide all the tire longevity benefits.

MATCH MOUNTING

Tires and wheels are currently match mounted at
the factory. Match mounting is a technique used to
reduce runout in the wheel/tire assembly. This means
that the high spot of the tire is aligned with the low
spot on the wheel rim. The high spot on the tire is
marked with a paint mark or a bright colored adhe-
sive label on the outboard sidewall. The low spot on
the rim is identified with a label on the outside of the
rim and a dot on the inside of the rim. If the outside
label has been removed the tire will have to be
removed to locate the dot on the inside of the rim.
Fig. 5 Tire Wear Patterns
Fig. 6 Tire Rotation Pattern
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