Pontiac 1998 Trans Sport Owner's Manual page 370

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Inflation
--
Tire Pressure
The GertificatiordTire 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).
NOTICE:
Don't let anyone tell you that underinflation or
overinflation is all right. It's not. If your tires
don't have enough air (underinflation), you can
get the following:
Too much flexing
Too
much heat
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:
0
Unusual wear
0
Bad handling
Rough ride
0
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 P a ) .
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.
~~
6-41

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