Downloaded from www.Manualslib.com manuals search engine Traction -- A, B, C
The traction sades, from highest to lowesr. are A. B. and
C, and they represent the tire's ability to stop on wet
pavement
as measured under controlled conditions on
specified government test surfaces of asphalt and concrete.
A tire marked C may have poor traction per-fornmance.
Warning: The traction grade assigned to
this tire is based
on braking (straight ahead) traction tests and does not
include cornering (turning) traction.
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 conditions on
a specified indoor laboratory
test wheel. Sustained high temperature 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 corresponds 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
performance on the laboratory test wheel than the
minimum required by law. Warning: The
temperature grade for this tire
is
established for a tire that is properly inflated and not
overloaded. Excessive speed, underinflation, or
excessive loading, either separately
or in combination.
can cause heat buildup and possible tire failure.
Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are
not
needed. However, if you notice unusual tire wear or
your vehicle pulling one way or
the other. the alipment
may need to be reset. If you notice your vehicle
vibrating when driving
on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent. cracked, or badly rusted
or corroded.
If wheel nuts keep coming loose, the wheel.
wheel bolts and wheel
nuts should be replaced. If the
wheel leaks air. replace
it (except some aluminum
wheels. which can sometimes be repaired).
See your
GM dealer if any of these conditions exist.
Your dealer
will know the kind of wheel you need.
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