Wheel balance refers to the even distribution of weight around a revolving tyre and wheel assembly. It ensures that the unit which comprises of a wheel rim and a tyre is in balance.

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Every time a wheel is first mounted onto a vehicle with a new tyre, it has to be balanced. The goal is to make sure the weight is evenly distributed throughout each of the wheels and tyres on a vehicle. This process evens out heavy and light spots in a wheel, so that it rotates smoothly. If there is even a slight difference in weight in the wheels, it will cause enough momentum to create a vibration in the car.

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In fact, wheels and tyres are never exactly the same weight all around. The wheel's valve stem hole will usually subtract a small amount of weight from that side of the wheel. Tyres will also have slight weight imbalances, whether from a joining point of the cap plies or a slight deviation from perfectly round. At high speeds, even a tiny imbalance in weight can become a large imbalance in outward force, which could cause the wheel and tyre assembly to spin in a heavy and uneven motion. This usually turns into a vibration in the car as well that could cause uneven and damaging wear on the tyres.

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Maintaining proper wheel balance is a critical part of maintaining the life of the tyre. Also proper wheel balancing ensures your vehicle has a smooth and vibration free ride.