Replacement Wheels Description
Wheels must be replaced if they are bent, dented, have excessive lateral or radial runout, leak air through welds, have elongated bolt holes, if lug nuts won't stay tight, or if they are heavily rusted. Wheels with greater runout than shown in the figure may cause objectional vibrations.
Wheels for replacement must be equivalent to the originally equipped wheels in load capacity, diameter, rim width, offset and mounting configuration.
A wheel of improper size or type may affect wheel and bearing life, brake cooling, speedometer / odometer calibration, ground clearance to the body and chassis.
To measure the wheel runout, it is necessary to use accurate dial indicator.
The tire may be on or off the wheel. The wheel should be installed to the wheel balancer of the like for proper measurement.
Take measurements of both lateral runout and radial runout at both inside and outside of the rim flange. With dial indicator set in place securely, turn the wheel one full revolution slowly and record every reading of the indicator. When the measured runout exceeds the specification and correction by the balancer adjustment is impossible, replace the wheel. If the reading is affected by welding, paint or scratch, it should be ignored.
Lateral runout limit
"a": 1.20 mm (0.047 in.)
Radial runout limit
"b": 1.20 mm (0.047 in.)