Operator`s manual

Maintenance 129
Tire Inflation and Wear
DANGER
Before checking the tires, set the parking
brakes, place the transmission in neutral
and block the wheels. Failure to do so can
result in unexpected vehicle movement
and can cause serious personal injury or
death.
WARNING
Check tire pressure when the tire is
cool. Never bleed the air from hot tires.
Increased tire pressure measured in a hot
tire is normal. Low pressures may cause
side wall flexing, resulting in increased
heat, leading to tire failure and vehicle
accident.
Measure the tread depth. The depth should
not be less than 6/32 in. (4.8 mm) on front
tires and not less than 2/32 in. (1.6 mm) on
drive tires.
Note: Most premium steer tires start with
18/32 in. (14.2 mm) tread depth when new.
Usually remove steer tires at 6/32 in (4.8
mm). Drive tires should be removed at not
less than 2/32 in. (1.58 mm)
It is important to have the wheels correctly
aligned. Check for uneven tire wear
frequently. Uneven tire wear is a sign of
wheels out of alignment. Refer to page 158
for examples of typical tire wear.
W7000773
WARNING
DO NOT operate the vehicle with
under-inflated tires. Always keep your
tires inflated to the manufacturer’s
recommendation. Increased flexing in the
tire sidewall produces heat. The heat can
build to the point of blowing the tire out
causing an accident.
Remove stones lodged in ribs or in between
double-mounted wheels. Check the tire
pressure and leak-test the valve stems.
W7001270