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Inspection and Servicing/Cleaning
Vehicle Exterior Inspection
Tires degrade over time, even when
they are not being used on the road.
It is recommended that tires
generally be replaced when they are
6 years or older. Heat caused by hot
climates or frequent high loading
conditions can accelerate the aging
process. The period in which the tire
was manufactured (both week and
year) is indicated by a 4-digit
number.
Refer to Tire Labeling on page
10-30.
9-38
Rotating the Tires
WARNING
Rotate tires periodically.
Irregular tire wear is dangerous. To
equalize tread wear for maintaining
good performance in handling and
braking, rotate the tires periodically or
sooner if irregular wear develops.
Please refer to Scheduled maintenance
for your tire rotation interval.
During rotation, inspect them for
correct balance.
Do not include (TEMPORARY USE
ONLY) spare tire in rotation.
Also, inspect them for uneven wear
and damage. Abnormal wear is usually
caused by one or a combination of the
following:
Incorrect tire pressure
Improper wheel alignment
Out-of-balance wheel
Severe braking
After rotation, inflate all tire pressures
to specification (page 10-69) and
inspect the lug nuts for tightness.
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