Pontiac 1998 Grand Am Owner's Manual page 275

Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service, see
your Pontiac Warranty booklet for details.
-
A
CAUTION:
Poorly maintained and improperly used tires
are dangerous.
Overloading your tires can cause
overheating as a result of too much friction.
You could have an airout and a serious
accident. See "Loading Your Vehicle" in
the Index.
CAUTION: (Continued)
Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could
cause
serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when
your tires are
cold.
cut,
punctured
or
broken by
a
sudden
impact
--
such as when you hit a pothole.
Keep tires
at
the recommended pressure.
Worn, old tires can cause accidents. If your
tread is badly worn, or if your tires have
been damaged, replace them.
Overinflated
tires are
more likely
to
be
Inflation
--
Tire Pressure
The Tire-Loading Information label, which is on the
rear edge of the driver's door, shows the correct
inflation pressures for your tires when they're cold.
"Cold" means your vehicle has been sitting for at least
three hours or driven no more than 1 mile (1.6
km).
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