Why does the steering wheel shake when driving at 100 km/h?

[LeLane]

Reasons for steering wheel shaking during high-speed driving: 1. 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, affecting the tire's dynamic balance. 2. Significant differences in tire pressure among the four tires: When there is a large difference in tire pressure among the four tires, especially between the left and right tires, the car will experience noticeable body shaking and steering wheel vibration at high speeds. 3. Poor wheel alignment: When the wheel alignment angles are significantly off, the car may exhibit body deviation and shaking during high-speed driving, along with uneven tire wear, accelerating tire wear and shortening tire lifespan.