Wheels And Tires, Radial And Lateral Run Out, Checking With Tire Dial Gauge

Checking lateral run-out

-- Preload the Tire Dial Gauge approximately 2 mm.

-- Position the Tire Dial Gauge on the side wall of the tire.

Fig 1: Checking Lateral Run-Out

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Rotate the wheel slowly.

-- Note the smallest and the largest dial readings.

NOTE:

If the difference is greater than 1.3 mm, the lateral run-out is too great.

In this case, lateral run-out can be reduced by matched mounting of the tire. Refer to WHEELS AND TIRES, MATCHING .

Peak values on the Tire Dial Gauge due to small irregularities in the rubber may be disregarded.

Checking Radial Run-Out

-- Preload the Tire Dial Gauge approximately 2 mm.

-- Position the Tire Dial Gauge on the tread of the tire.

Fig 2: Checking Radial Run-Out

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Rotate the wheel slowly.

-- Note the smallest and the largest dial readings.

NOTE:

If the difference is greater than 1 mm, the radial run-out is too great.

In this case, radial run-out can be reduced by matched mounting of the tire. Refer to WHEELS AND TIRES, MATCHING .