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WARNING:
DO NOT mix tires of different sizes, load ranges or manufacturer brand types or models. Any and
all replacement tires must have a rated load carrying capacity equal to or greater than the gross axle
weight/load ratings as identified by the federal placard.
WARNING:
In many instances tire life is not determined by mileage or wear but by age. Tires are subject to
weathering. Weathering cracks can appear in the sidewall and also run along the edge of the tire.
Though the sidewall of the tire may look structurally sound, weathering can occur inside the groove of
the tread. If any tire exhibits age weathering, replace all tires.
CAUTION:
Signs of irregular tread wear, exhibited by scalloping or unusually smooth areas on the tire surface,
are cause for concern. Immediately have the tire manufacturer inspect the tires.
Wheel Mounting
Hub Piloted Mounting:
Before using flange nuts that have already been used in service, apply two drops of oil at one point
between the flange and hex. This will allow parts to rotate freely and provide the proper clamping force
when tightened. Use any common lubricant typically used for fasteners. Examples are motor oil and
general purpose lubricating oils. Excessive lubricant is not desirable, this will not improve the nut torquing
performance. Excessive lubricant makes the nuts hard to handle, attracts dirt to the nuts and may cause
unsightly appearance to the wheel. Only used nuts need to be lubricated.
Flange nuts generate higher clamping force. Always use grade eight studs with hub mount wheels.
Before installing the wheels, lubricate the hub pilot pads with a drop of oil to prevent galling. Do not
lubricate any other wheel or hub surface.
For a hub with intermittent pilot pads, position a pad at the twelve o’clock position to center the wheel and
reduce runout.
NOTE:
Loosen and tighten lug nuts in a star pattern sequence. Sequence tighten to 50 ft. lbs. first, then
sequence tighten to the chassis manufacturer’s recommended specifications. Over-tightening can
cause distortion.
WARNING:
Never use wheels or lug nuts different than the original equipment as this could damage the wheel or
the mounting system. Damage to the wheel or mounting system could cause a wheel to come off while
the motorhome is in motion.
Front Wheels:
Slide the front wheel over the studs, being careful not to damage stud threads. Snug the nuts in sequence, do not
tighten all lugnuts have been seated. Sequence tighten nuts to the chassis manufacturer’s specifications.
Dual Rear Wheels:
Slide the inner dual wheel over the studs, being careful not to damage the stud threads. Align the handholds for
valve access and slide the outer dual wheel over the studs, again being careful not to damage the stud threads.
Snug the nuts in sequence, do not tighten them fully until all have been seated. Sequence tighten the nuts to the
chassis manuafacturer’s specification.
Torque the Nuts Properly:
Tighten the wheel nuts to the recommended lug nut torque. Do not over-tighten.
Maintain the nut torque at the recommended level through planned periodic checks or at 10,000 mile
intervals, whichever comes first.
