Rust or dirt on
a
wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a 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 you need to,
to get all the rust or
dirt
off.
See “Changing a
Flat Tire” in the Index.
When
It
Is
Time for New Tires
One way
to
tell when it’s
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. Some
commercial truck tires
may not have treadwear
indicators.
You need a new tire
if
any of the following statements
are true:
You can see the indicators at three or more places
You can see cord or fabric showing through the
The tread or sidewall is cracked, cut or snagged
0
The tire has a bump, bulge or split.
The tire has a puncture, cut or other damage that
around the tire.
tire’s rubber.
deep enough
to
show cord or fabric.
can’t be repaired well because of the size or
location of the damage.
5-59
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