PART 8: MAINTENANCE AND SERVICE
PB1319 (CAT. NO. 5296 ) —132— 22-01691 (R02/02)
5. Replacing Tires.
Front: Replace front tires when less than 4/32 in. of tread remains.
Check at three places equally spaced around the tire.
Drive Axles or Trailers: Replace tires on drive axles or trailers when
less than 2/32 in. of tread depth remains in any major groove. Check
at three places equally spaced around the tire. See below for recom-
mended measuring points for tread depth:
Steer Tire Drive Tire
WARNING! Mismatched tires are dangerous. Mixing
tire types may lessen the road-holding ability of both
types of tires. You can lose control and be injured.
Never mix tires of different design, such as steel belted
radials and bias ply tires. Make sure, too, that you use
the right size tires on each wheel. Some trucks require
different sizes on front and rear wheels. For safety,
always use the recommended size and type of tires.
WARNING! Regrooved tires or tires with reinforcement
repairs can be dangerous on steering axles. They could
cause you to lose control of your vehicle. Do not install
regrooved or reinforcement-repaired tires on your steer-
ing axles.
NOTE: To prolong your tires’ life and make them safer, have
their radial and lateral run-out checked at your dealer. And
of course you should have your tires balanced any time you
change a tire.
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