Modern tyres and wheels are made to exacting standards but after fitting to the wheel, the assembly may need to be dynamically balanced. By 'balancing' the tyre and wheel assembly, small variances in weight distribution can be evened out making for a more comfortable and safer ride.

Wheels with an imbalance problem may cause: -

• Discomfort to the driver • Loss of contact between the tyre and the road • Excessive uneven wear of tyres • Increased wear of steering and suspension components, especially shock absorbers • At worst, a reduction in the life of the whole vehicle

An imbalance becomes more obvious as speed increases, typically felt as a vibration through the steering wheel or vehicle body.

A wheel balance machine is used to detect the points of imbalance. Weights of appropriate sizes are then affixed to the rim to counteract the imbalance. This should be done when new tyres are fitted and is recommended from time to time throughout the life of the tyre. Many experts recommend a rotation and balance every 5,000km.