Chevrolet 1998 C/K Full-Size Pickup Owner's Manual page 346

You
need
a
new tire if
any
of the following statements
are true:
0
You can see the indicators at three or more places
0
You can see cord or fabric showing through the
0
The tread or sidewall is cracked, cut or snagged deep
around the tire.
tire's rubber.
enough to show cord or fabric.
The tire has a bump, bulge or split.
0
The
tire has a puncture, cut or other damage that
can't be repaired well because of the size or location
of the damage.
Dual Tire Operation
When the vehicle is new, or whenever a wheel, wheel
bolt or wheel nut is replaced, check the wheel nut
torque after 100, 1,000 and 6,000 miles (160, 1 600 and
10 000 km) of driving. For proper torque, see "Wheel
Nut Torque" in the Index.
The outer tire on
a
dual wheel setup generally wears
faster than the inner tire. Your tires will wear
more
evenly and last longer if you rotate the tires periodically.
If you're going to be doing a lot of driving on
high-crown roads, you can reduce tire wear by adding
5 psi (35 kPa) to the tire pressure in the outer tires. Be
sure to return to the recommended pressures when no
longer driving under those conditions. See "Changing
a
Flat Tire" in the Index for more information.
If you operate your vehicle with a tire that is badly
underinflated, the tire can overheat. An overheated
tire can lose air suddenly or catch fire. You or
others could be injured. Be sure all tires (including
the spare, if any) are properly inflated.
Buying New Tires
To find out what kind and size of tires you need, look at
the CertificationRire label.
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