We "true" tires here at the Tony’s Brake & Alignment. Why and what is that? Tires are not naturally round, instead they are slightly oval or egg shaped.
The inability to produce perfectly rounded rubber tires creates the need for weights to balance tires and wheels. Tire truing does not eliminate tire weights; instead it eliminates the oval on the tire.
The process of truing will provide a much smoother ride, longer lasting tires, better tire wear, and more efficient fuel mileage. You will also save gas by having your tires trued.