Why does the car shake when driving on the highway?

[DelAdam]

Highway car shaking can be caused by excessive tire pressure, severe tire wear, imbalance in tire dynamic balance, or inaccurate four-wheel alignment. Specific details are as follows: 1. Excessive tire pressure: If the tire pressure is too high, the vehicle will bounce more when driving on bumpy roads, and it can also cause the car body to shake at high speeds. 2. Severe tire wear: If the tires are severely worn with uneven tread, it can also lead to car body shaking at high speeds. In such cases, the tires should be repaired or replaced promptly. 3. Imbalance in tire dynamic balance: If the dynamic balance weights are displaced or fall off, the tires will lose balance, causing the car to shake at high speeds. In this situation, the dynamic balance weights should be inspected and replaced.