Runout

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

To avoid false readings caused by temporary flat spots in the tires, check runout only after the vehicle has been driven. Visually inspect the tire carcass for abnormal bulges or distortions.

Runout should be measured with a Rotunda Radial Run-Out Gauge 007-0056A or equivalent. All measurements should be made on the vehicle with the tires inflated to recommended load inflation pressures and with the wheel bearings adjusted to specification.

Using Rotunda Radial Run-Out Gauge 007-0056A or equivalent, measure radial runout of the tire at the center and outside ribs of the tread face. Measure lateral runout of the tire just above the buffing rib on the tire sidewall. Mark the high points of lateral and radial runout for future reference. On tires, radial runout should not exceed 1.59 mm (0.062 inch), and lateral runout should not be more than 1.78 mm (0.070 inch).





Measure radial and lateral wheel runout at the positions shown in the illustration.

Runout should not exceed the values shown in the table below.

Aluminum Wheels
Max. Radial Runout: 0.3 mm (0.012 inch)
Max. Lateral Runout: 0.3 mm (O.012 inch)
Steel Wheels
Max. Radial Runout: 0.8 mm (0.031 inch)
Max. Lateral Runout: 0.8 mm (0.031 inch)