1995 Pontiac Bonneville Owner's Manual - Page 251

1995 Pontiac Bonneville Manual

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Temperature A, B, C The temperature grades are A (the highest), B, and C, representing the tire's resistance the generation of to 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 gradeC corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety StandardNo. 109. Grades B and A represent higher levels of performance on the - (P Metric) tires mustconform to Federal safety requirements in addition to these grades. Wheel Alignment and Tire Balance The wheels on yourvehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. In most cases, you will need to haveyour wheels not aligned again. However,if you notice unusual tire wear or your vehicle pullingone way or the other, the alignment may needto bereset. If you notice your vehicle vibrating whendriving on a smooth road, your wheels may needto be rebalanced. laboratory test wheel than the minimum required by law. Warning: The temperature grade forthis tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or incombination, 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 oroptional 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 Motorsvehicles. All passenger type Wheel Replacement Replace any wheel that is bent, cracked, or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts, andwheel nuts should be replaced. If the wheel leaks air,replace it (except some aluminum wheels, which can sometimes be repaired). See your Pontiac 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 bemounted the same way as the one it replaces. 6-38

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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.
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
pullingone 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
Pontiac
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
bemounted the
same
way
as
the one
it
replaces.
6-38