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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.
These grades are molded on the sidewalls of passenger car tires.
While the tires available as standard or optional equipment
on
General
Motors vehicles may vary with respect to these grades, all such tires meet
General Motors performance standards and have been approved for use on
General Motors vehicles. All passenger type
(P
Metric) tires must conform
to Federal safety requirements in addition
to
these grades.
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.
In most cases, you will
not
need to have your wheels aligned again.
However, if
you
notice unusual tire wear or your vehicle pulling one way or
the other, the alignment 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.
Each new wheel should have the same load carrying capacity, diameter,
width, offset, and
be
mounted the same way as the one it replaces.
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