How Does Wheel Balancing Work? Static and Dynamic Balancing

Wheel balancing ensures that the weight of the wheel, made up of the rim and tyre, is evenly distributed. Modern balancing machines measure two types of imbalance together.

Static imbalance

This is excess weight at a single point on the wheel. As the wheel turns, it creates an up-and-down hopping motion.

Dynamic imbalance

This is a weight difference distributed between the inner and outer faces of the wheel. As the wheel turns it wobbles sideways, which is felt as vibration in the steering wheel. Dynamic balancing is especially important on wide wheels.

Types of balance weights

• Clip-on weights: attached to the rim edge on steel wheels.
• Stick-on weights: bonded to the inner surface on alloy and painted rims; they are invisible and do not scratch the rim.

For a correct balance

• The hub surface must be clean and the wheel must be centred on the machine.
• Old weights and adhesive residue must be removed.
• The measurement should be repeated after the weights are fitted.

See our wheel balancing page for details.