What Causes Steering Wheel Vibration When Speed Exceeds 100 km/h?

[Laura]

Steering wheel vibration when speed exceeds 100 km/h is mainly caused by poor tire dynamic balance, significant differences in tire pressure among the four tires, or improper wheel alignment. Poor tire dynamic balance: During driving, if a tire is subjected to a strong local impact, it may cause the balance weights to fall off or become damaged, thereby affecting the tire's dynamic balance. When driving at high speeds, the driver will feel noticeable vibration in the body and steering wheel, which becomes more pronounced as the speed increases. Significant differences in tire pressure among the four tires: When there is a considerable difference in tire pressure among the four tires, especially between the left and right tires, the car will experience noticeable bumpiness and steering wheel vibration at high speeds. Improper four-wheel alignment: When the four-wheel alignment has significant deviation angles, the car will exhibit phenomena such as body drift and vibration during high-speed driving. Additionally, it can lead to uneven tire wear, accelerating tire deterioration and shortening the tire's service life.