Dodge RAM TRUCK 1500 1995 Service Manual page 1622

22 - 10 WHEELS AND HUES
BR
mount it 90 degrees on the rim in that direction (Fig.
9). This procedure will normally reduce the runout to
an acceptable amount.
2ND HIGH SPOT
ON THE
SPOT ON
TIRE
J9322-5
Fig. 9 Remount Tire 90 Degrees in Direction of
Arrow
TIRE AND WHEEL RUNOUT
Radial runout is the difference between the high
and low points on the tire or wheel (Fig. 10).
Lateral runout is the wobble of the tire or wheel.
. J9022-4
Fig. 10 Checking Tire Runout
Radial runout of more than 1.5 mm (.060 inch)
measured at the center line of the tread may cause
the vehicle to shake.
Lateral runout of more than 2.0 mm (.080 inch)
measured near the shoulder of the tire may cause the
vehicle to shake.
Sometimes radial runout can be reduced. Relocate
the wheel and tire assembly on the mounting studs
(See Method 1). if this does not reduce runout to an
acceptable level, the tire can be rotated on the wheel.
(See Method 2).
METHOD
1 (RELOCATE WHEEL ON HUB)
Check accuracy of the wheel mounting surface; ad­
just wheel bearings.
Drive vehicle a short distance to eliminate tire flat
spotting from a parked position.
Make sure all wheel nuts are properly torqued.
Relocate wheel on the mounting, two studs over
from the original position.
Re-tighten wheel nuts until all are properly
torqued, to eliminate brake distortion.
Check radial runout. If still excessive, mark tire
sidewall, wheel, and stud at point of maximum
runout and proceed to Method 2.
METHOD 2 (RELOCATE TIRE ON WHEEL)
Rotating tire on wheel is particularly effective
when there is runout in both tire and wheel.
Remove tire from wheel and re-mount wheel on
hub in former position.
Check wheel radial runout (Fig. 11).
• STEEL WHEELS: Radial runout 0.040 in., Lateral
runout 0.045 in.
• ALUMINUM WHEELS: Radial runout 0.030 in.,
Lateral runout 0.035 in.
J8922-11
Fig. 11 Checking Wheel Runout
If point of greatest runout is near original chalk
mark, remount tire 180 degrees. Recheck runout.