Tyre rotation is vital to achieving even tread wear and long tread life. Rotation is necessary because of the uneven wear characteristics of each wheel position on the vehicle.
A good example is Front Wheel Drive vehicles which places braking, steering and driving forces on the front axle tyres.
Rear axle tyres only receive braking forces resulting in a much faster wear rate for the front axle tyres.
Tyre rotation for these vehicles therefore becomes very important for optimum tyre life.