What are the reasons for car shaking at 120 mph?
1 Answers
Main reasons for car shaking at 120 mph: 1. Poor dynamic balance of the two front wheels. If there is a pressure difference between the tires, the wheels' ability to absorb vibrations varies, which can also cause the car to shake. A deformed or bent drive shaft or excessive wear of the drive shaft ball joints can lead to vehicle shaking. 2. Differences in the vehicle's toe-in and kingpin inclination angles can cause body shaking. This issue can be resolved by adjusting the angles through a four-wheel alignment. 3. Poor performance of shock absorbers, which fail to effectively absorb vibrations. Inspect all shock absorbers and repair or replace any faulty parts. 4. Severe aging of engine mounts, which cannot absorb the vibrations generated during engine operation, transmitting them to the body and causing shaking. The old engine mounts can be removed and replaced with new ones.