Chevrolet 4500 HD 2023 Manual page 292

Warning
Tires with excessively shallow tread
grooves will increase the chance of
skidding and, when driving at high
speeds, hydroplaning. You and others
could be seriously injured.
Hydroplaning occurs when a vehicle is
running at high speeds on a wet road and a
layer of water forms between the road
surface and tires causing the tires to float
on it. Hydroplaning prevents the driver from
steering correctly and from slowing down
the vehicle with the brake pedal.
Use of Low Aspect Ratio Tires
1. Standard tire
2. Low aspect ratio tire
Low aspect ratio tires for truck applications
(aspect ratio at 70%) have an air volume
20% to 30% smaller than that of standard
tires. Therefore, if air begins to leak, low
aspect ratio tires adversely affect vehicle
operation much faster than standard tires.
Check air pressure of low aspect ratio tires
more often than standard tires using a tire
air pressure gauge.
Damaged Tires
Danger
It is dangerous to mount the wrong size
tire on a wheel. If you do so, the tire/
wheel can explode as air is being added.
This explosion may result in severe
personal injury or death. To learn which
wheels and tires are correct, look at the
"VIN, Weight Rating, and Greenhouse Gas
(GHG) Emissions Plate" on the left side
rear pillar panel below the striker (single
cab) or on the left center pillar panel
beside the shoulder seat belt anchor
(crew cab). Wheel size is also stamped on
the side of each wheel.
Danger (Continued)
To help avoid personal injury and
property damage if a wheel must be
changed, seek expert tire services if you
can. If you must remove the wheel
without any such help, do the following:
If the tire looks as if it may be
underinflated, stand to the side and
check whether the wheel assembly
appears normal by comparing it to
another wheel assembly on the
vehicle.
Let the air out of the tire by taking
out the valve core. If you have a way
to put air back in a tire, note that it is
good safety practice to let the air out
of both tires of a dual assembly
before taking off the damaged tire
and rim assembly from the vehicle.
After letting out the air, take off the
tire and rim assembly and install a
spare tire and rim assembly.
If your vehicle is equipped with a
differential lock system, it might start
moving when the engine power is
transmitted to the rear axle even
when one of the wheels on the axle is
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Vehicle Care 291
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