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Wheels with sensitive surfaces and bonded wheel trims > < Conducting a road test before balancing wheels

A3 Mk1

Balancing wheels on stationary wheel balancer
Balancing wheels on stationary wheel balancer
  Note
When balancing tyres, please remember that cleanliness is absolutely essential, as indeed it is in the case of any other repair work you carry out. Only then can you attain a flawless result!
  Caution
Bond on the balancing weights so that they do not touch the brake caliper or parts of the suspension.
–  Attach wheel to wheel balancer.
Wheels with sensitive surfaces and bonded wheel trims → Chapter
  Note
t  On rims with bonded wheel trims, take care not to scratch the wheel trims.
t  Wheel trims have a very sensitive surface.
t  If a wheel trim is damaged, the rim must be renewed.
   
t  The wheel trim cannot be renewed.
Dirt and rust in the area of the contact surfaces and centre of the wheel distort the result.
–  Clean the contact surfaces, the centre of the wheel and the recess on the inside of the wheel before mounting the wheel on the wheel balancer.
–  Clamp wheel with tyre on balancer.
  Caution
Bond on the balancing weights so that they do not touch the brake caliper or parts of the suspension.
  Note
  A44-10265
t  Use e.g. wheel balancing machine centring system -VAS 5271- to clamp the wheel.
t  With this system you can centralise the wheel 100% and clamp the wheel without damaging it!
t  The wheel cannot be centralised 100% with conical clamping elements on the wheel balancer.
t  A deviation of 0.1 mm from the centre results in an imbalance of 10 grams at the wheel/rim.
Use a model-specific clamping plate, e.g. -VAS 6243-, to clamp the wheel on the wheel balancer without damage.
This will yield better balancing results and protect the surface of the rim (for instance if it has a chrome design).
Bolt hole circle diameter of individual rims
  N44-10208

Wheels with sensitive surfaces and bonded wheel trims > < Conducting a road test before balancing wheels