This product solves the phenomenon of tires bouncing up and down during high-speed driving of trucks and buses. It comprehensively considers tires, steel rings, hub bearings, shaft heads and other factors; the balance is accurate and the effect is clear! The configuration of a cart four-wheel positioning store and a truck and bus tire store. 02 02 Product features: 1. Microprocessor intelligent instrument, universal for trucks and buses. 2. Comes with calibrated kinetic energy to make the measurement accurate. 3. Online wheel balance on the car to avoid additional unbalance factors, which is convenient and fast. 4. Self-test function to ensure that the instrument is in a state at all times. 5. When used with the positioner, it can solve the abnormal tire wear and jitter caused by imbalance.