Pontiac 1996 Grand Am Owner's Manual page 260

Inflation
-
Tire Pressure
The Tire-Lo,ading Information label which is on the rear
edge
of
the driver's
door
shows the correct inflation
preissures 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 k m ) .
~~ ~~ ~~
NOTICE:
Don't let anyone tell you that underinflation or
overinflation is
all
right. It's not. 1% your
tires
don't have enough air (underinflation),, you can
get the following:
0
Too much flexing
0
Too much heat
0
Tire overloading
Bad wear
Bad handling
Bad fuel economy.
NOTICE: (Continued)
~~
~~
NOTICE: (Continued)
If your tires have too much air (overinflation),
you can get the following:'
e Unusual wear
*
Bad handling
*
Rough ride
e Needless damage from
road
hazards.
When to Check
Check your tires once a month or more.
Don't forget your compact spare tire. It should be at
60 psi (420 Wa).
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can't tell if your tires are properly inflated
simply by looking
at them. Radial tires may look
properly inflated even when they're underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and
moisture.
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