e
r-
Traction
--
A,
B,
C
The traction grades, from highest
to
lowest,
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 performance.
Warning: The traction grade assigned to this tire is based
on braking (straightahead) 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
A
and
B
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.
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.
6-41
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