Volkswagen Polo Service & Repair Manual: Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking

Volkswagen Polo Service & Repair Manual / Whels, Tires, Whel Alignment / Tires, Mounting / Wheel, Balancing / Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking

Before beginning balancing, the following requirements must be fulfilled.

The tire pressure must be OK.

The tire profile must not be worn on one side. The tire profile must be at least 4 mm.

The tires must not have any damage such as cuts, holes, foreign bodies, etc.

The suspension and steering, including the shock absorber, must be in perfect condition.

Test drive performed. Refer to → Chapter „Vibration, Road Test, Performing Before Balancing“.

Radial and lateral run-out occur when the wheel and tire are not running precisely true.

For technical reasons, 100% true running is not possible.

Therefore the manufacturers of these components allow a precisely specified tolerance.

Mounting the tire in a unfavorable position on the wheel can be the cause for exceeding the maximum allowed tolerance for wheel with tire.

Checking Lateral Run-Out

–	Preload the Tire Dial Gauge approximately 2 mm.

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

–	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 the radial run-out can be reduced by matched mounting. Refer to → Chapter „Tires and Rims, 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.

Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking

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

–	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 the radial run-out can be reduced by matched mounting. Refer to → Chapter „Tires and Rims, Matching“.

The table shows the maximum permissible tolerance values for the wheel with mounted tire.

Tolerances for Radial and Lateral Run-Out of Rim With Tire

Wheel, Balancing, Tire and Wheel Radial and Lateral Run-Out, Checking

Rim With Tire		Radial Run-Out (mm)	Lateral Run-Out (mm)
Passenger Vehicle		0.9	1.1 (1.3 near the lettering)

Wheel, Balancing with Fine Balancing Machine (Finish Balancer)

Before beginning balancing, the following requirements must be fulfilled. The tire pressure must be OK. The tire p ...

Wheel Balancing, Rim Radial and Lateral Run-Out, Checking

Mount the rim on the Balancing Machine. – Use the Wheel Centering System Adapter -VAS5271-. – Preload th ...

Other materials:

Silicone Remover
Definition: Silicone Remover -LSW 019 000 A5-, watery Silicone Remover -LVM 020 000 A5- Silicone Remover, Long -LVM 020 100 A5- Edition 02/2012 S ...

Taper
Taper is caused by slightly offsetting the tread and/or the belt by a few tenths of a millimeter from the geometric center of the tire. Taper cannot be recognized visually nor can it be measured with workshop equipment. ...

Warning lamp
Fig. 44 Warning lamp in the instrument cluster First read and observe the introductory information and safety warnings Lights up or flashes Possible cause Solution The driver seat belt and, if the front passenger seat is occupied, the fr ...