Checking the radial and lateral runout

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The measuring points for radial and lateral runout on the inside of the wheel are given on the following drawing (dimension "a").

Maximum permissible radial runout and lateral runout of the light alloy wheels = 0.7 mm.

Maximum permissible radial runout and lateral runout of the wheel with tyre = 1.25 mm. Values less than 1.0 mm - preferably around 0.5 mm - are desirable. See also GENERAL TYRE MOUNTING INSTRUCTIONS .

Please note: Straightening and welding work on light alloy wheels is not permissible.

Fig 1: Checking Radial And Lateral Runout On Wheel Rim

Courtesy of PORSCHE OF NORTH AMERICA, INC.

NOTE:

Use a tyre measuring gauge - for example, V.A.G. 1435 - to measure wheels without tyres and wheels with tyres.

Fig 2: Identifying V.A.G. 1435

Courtesy of PORSCHE OF NORTH AMERICA, INC.