Runout

NOTE: Perform runout checks only after the vehicle has been driven far enough to warm the tires and to avoid false readings caused by temporary flat spots on the tires.

To equalize tire wear, the tires should be rotated at recommended intervals.

Excessive radial and lateral runout of a wheel and tire assembly can cause roughness, vibration, wheel tramp, tire wear and steering wheel tremor.

The extent of the runout is measured with Dial Indicator. All measurements are made on the vehicle with the tires inflated to recommended inflation pressures.






Use Dial Indicator to measure the (1) radial and the (2) lateral wheel runout, and the (4) radial and the (3) lateral tire runout at the positions shown in the illustration. Mark the high point of radial runout of the tire on the sidewall, and mark the high point of radial runout of the wheel on the wheel face for future reference.