Dodge RAM 1500 1998 Owner's Manual page 2283

22 - 4 TIRES/WHEELS
TIRES/WHEELS (Continued)
(3) Break down the tire and remount it 180
degrees on the rim (Fig. 7).
Fig. 7 Remount Tire 180 Degrees
1 - VALVE STEM
2 - REFERENCE MARK
(4) Measure the total indicator runout again. Mark
the tire to indicate the high spot.
(5) If runout is still excessive, the following proce-
dures must be done.
• If the high spot is within 101.6 mm (4.0 in.) of
the first spot and is still excessive, replace the tire.
• If the high spot is within 101.6 mm (4.0 in.) of
the first spot on the wheel, the wheel may be out of
specifications. Refer to Wheel and Tire Runout.
• If the high spot is NOT within 101.6 mm (4.0
in.) of either high spot, draw an arrow on the tread
from second high spot to first. Break down the tire
and remount it 90 degrees on rim in that direction
(Fig. 8). This procedure will normally reduce the
runout to an acceptable amount, if not replace the
rim.
STANDARD PROCEDURE - TIRE AND WHEEL
BALANCE
It is recommended that a two plane service
dynamic balancer be used when a tire and wheel
assembly require balancing. Refer to balancer opera-
tion instructions for proper cone mounting proce-
dures. Typically use front cone mounting method for
steel wheels. For aluminum wheel use back cone
mounting method without cone spring.
Fig. 8 Remount Tire 90 Degrees In Direction of
1 - 2ND HIGH SPOT ON TIRE
2 - 1ST HIGH SPOT ON TIRE
NOTE: Static should be used only when a two plane
balancer is not available.
NOTE: Cast aluminum and forged aluminum wheels
require coated balance weights and special align-
ment equipment.
Wheel balancing can be accomplished with either
on or off vehicle equipment. When using on-vehicle
balancing equipment, remove the opposite wheel/tire.
Off-vehicle balancing is recommended.
For static balancing, find the location of the heavy
spot causing the imbalance. Counter balance wheel
directly opposite the heavy spot. Determine weight
required to counter balance the area of imbalance.
Place half of this weight on the inner rim flange and
the other half on the outer rim flange (Fig. 9).
For dynamic balancing, the balancing equipment is
designed to locate the amount of weight to be applied
to both the inner and outer rim flange (Fig. 10).
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