When It Is Time For New Tires - Chevrolet 2007 Optra Owner's Manual

Make certain that all wheel nuts are properly
tightened. See "Wheel Nut Torque" under
Capacities and Specifications on page 352.
CAUTION:
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Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after time. The wheel could
come off and cause an accident. When
you change a wheel, remove any rust or
dirt from places where the wheel attaches
to the vehicle. In an emergency, you can
use a cloth or a paper towel to do this;
but be sure to use a scraper or wire brush
later, if needed, to get all the rust or dirt
off. See Changing a Flat Tire on page 324.

When It Is Time for New Tires

You need a new tire if any of the following
statements are true:
•
You can see the indicators at three or more
places around the tire.
•
You can see cord or fabric showing through
the tire's rubber.
•
The tread or sidewall is cracked, cut, or
snagged deep enough to show cord or fabric.
•
The tire has a bump, bulge, or split.
•
The tire has a puncture, cut, or other damage
that cannot be repaired well because of the
size or location of the damage.
One way to tell when it
is time for new tires is
to check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remaining.
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