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7-30
INSPECTION AND MAINTENANCE
80J23-03E
Temperature – A, B, C
The temperature grades are A (the
highest), B and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel. Sustained high tempera-
ture can cause the material of the tire
to degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C corre-
sponds to a level of performance
which all passenger car tires must
meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B
and A represent higher levels of per-
formance on the laboratory test wheel
than the minimum required by law.
Tire Rotation
54G114
To avoid uneven wear of your tires and
to prolong their life, rotate the tires as
illustrated. Tires should be rotated as
recommended in the periodic mainte-
nance schedule. After rotation, adjust
front and rear tire pressures to the
specification listed on your vehicle’s
Tire and Loading Information Label.
WARNING
The temperature grade for this
tire is established for a tire that is
properly inflated and not over-
loaded. Excessive speed, under-
inflation or excessive loading,
either separately or in combina-
tion, can cause heat buildup and
possible tire failure.
WARNING
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after a time. The wheel could
come off and cause an accident.
When you change a wheel,
remove any rust or dirt from
places where the wheel attaches
to the vehicle. In an emergency,
you can use a cloth or a paper
towel to do this; but be sure to
use a scraper or wire brush later,
if you need to, to get all the rust
or dirt off.