Not all shops are equipped to provide road force balancing. Tri City Auto Repair indexes your tires with your wheels. Tires and wheels are never perfectly round. We index by mounting the high point of the tire opposite the high point of the wheel to make the combination as round as possible before proceeding with normal spin balancing. This process helps eliminate vibration from your car or truck tires, especially at faster highway speeds, giving you a smoother more comfortable ride.