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11 WHEELS & TIRES
TIRES & WHEELS
Your bus is equipped with high quality
tires that meet the vehicle usage
specifications. Tires are warranted by
the tire manufacturer as described
in the documents provided with your
vehicle.
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Inspect tires daily for evidence of
damage such as cuts, scuffs, cracked
sidewalls, or any signs of rubber
separating from the tire. Also, watch
for abnormal wear.
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Check tire inflation pressure at
least once per week while the tire is
cold. Never attempt to check or adjust
tire pressure while a tire is hot. Tire
pressure increases with temperature
and subsequent readings will be faulty.
Under-inflation may result from such
testing. If necessary, adjust the tire
pressure by adding or removing air
until the designated pressure range for
the tire is reached.
Note that low tire pressure reduces
the load carrying capacity and may
lead to the overheating of tires and/
or potential tire failure. Similarly,
excessive tire pressure affects vehicle
handling and increases the risk of tire
failure.
Always use an accurate gauge when testing
tire pressure.
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Tires should be rotated on a regular
basis using a recommended rotation
pattern. Rotating the tires should
result in more uniform tread wear and
may lengthen tire life, however, do
not put a worn tire and high-tread tire
on the same axle. Keep tire treads
matched as closely as possible. All tires
need to be the same size.
If abnormal tire wear occurs, have the
steering and wheel alignment checked
by qualified service professionals. Tire
rotation will only temporarily disguise
the problem if steering or wheel
alignment is off.
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The outside tire will wear faster
than the inner tire with dual rear
wheels. To equalize wear, reverse the
tire positions on a regular mileage
schedule.
If one dual wheel must be replaced, always
replace both duals to keep tread wear equalized.
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Keep lug nuts tight. Loose lug nuts
will quickly ruin a wheel and can result
in loss of the wheel, thus creating a
dangerous situation for driver and
passengers.
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If you suspect a loose wheel, pull
off the road and inspect the lug nuts
immediately.
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Inspect lug nuts at every chassis
service, lubrication or inspection.
If your bus is fitted with wheel covers,
remove them prior to inspection.
Image: Tire And Wheel
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