Tyre balancing: what should you know? Sometimes when tyres are mounted the distribution of weight of the tyre and wheel assembly is not perfectly even all around the tyre A wheel is out of balance when one area is heavier or lighter than the rest. The result is bouncing or wobbling, which can decrease tread life, increase vibration and cause stress on your vehicle Tyre balancing compensates for the weight differences to make sure that the tyre weight is balanced. Tyre mechanics will add weights where necessary to counterbalance the tyres