Operation CHARM: Car repair manuals for everyone.

On-Vehicle Balancing

When needed, on-vehicle balancing may help correct vibrations due to brake drum, rotor and wheel cover imbalance.

When balancing on-vehicle, do not remove the balance weights from the off-vehicle dynamic balance. If more than 28 grams (1 ounces of additional weight is required, split the weights between the inboard and outboard rim flanges.

The front suspension should not be allowed to hang free. When the CV joint is run at a very high angle, extra vibrations can occur, as can damage to seals and joints. Always follow the equipment manufacturer's instructions.

CAUTION: Do not spin the drive wheels faster than 35 mph (55 km/h) as indicated by the speedometer. This limit is necessary because the speedometer indicates only one-half of the actual wheel speed when one drive wheel is spinning and the other drive wheel is stopped. Personal injury and damage may result from high speed spinning.

The driven wheels and tires should be spun using the engine. Limit the speed as stated in the preceding caution.