IC Bus Gasoline CE Series, Operation And Maintenance Manual

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Maintenance Instructions
NOTE: The load rating of the tires installed on your vehicle
at the time of your vehicle’s production is at or in excess of
the Gross Axle Weight Rating (GAWR) generally found on
a label on the bulkhead above the driver. When replacing
tires, be sure that the replacement tire load rating (listed
separately in pounds and kilograms on the tire sidewall
for single or dual applications) multiplied by the number
of tires on that axle is equal to or higher than the specific
listed Steer Axle or Drive Axle GAWR. Failure to do so will
adversely affect maximum load-carrying capacity.
Tires
with the same size specification do not always have the
same load specification.
Dual Tires Matching
Dual tires should be matched using tires of equivalent size. Tires
that differ more than 1/4 in (6 mm) in diameter or 3/4 in (19 mm)
in circumference should not be mounted on the same dual wheel
assembly.
Dual Tires Mixing
NOTE: Never mix bias and radial tires on this vehicle.
It is recommended for best overall performance that only radial
tires be used on this vehicle.
Never mix different tire sizes or constructions on the same axle.
Rotation
• Steer tires that have developed some type of irregular
wear pattern can be rotated to drive axles if rib tires are
being used on all wheel positions. Applying steer tires to
a drive position will often wear off the irregularities, and
they can be moved back to the steer axles or run out to
retread stage on the rear axle.
• Another rotation possibility for fleets with rib tires in all
wheel positions is to break in the new steer tires in the
drive axle positions, then move them to steer axles. This
will wear away tread rubber relatively quick in the early
life of a tire when it is most likely to develop an unusual
wear pattern.
• Drive axle tires may be placed on the other end of the
same axle so that direction of rotation is reversed. This is
often helpful if a heel and toe or alternate wheel nut wear
pattern has developed.
Rotation Is Advisable
1. If front (steering) axle tires become irregularly worn,
move to rear position.
2. In a dual assembly, reverse the position of the tires if
one tire wears much faster than its mate.
3. On the drive axle, if heel and toe wear or alternate wheel
nut wear occurs, rotating the tires from one end of the
axle to the other end of the axle may help even out this
wear.
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