What Causes Steering Wheel Vibration at Speeds Above 100 km/h?

[VanJuliette]

The reasons for steering wheel vibration at speeds above 100 km/h are: 1. Poor tire dynamic balance, where the tire loses balance weights due to strong local impacts during driving, affecting the tire's dynamic balance; 2. Significant differences in tire pressure among the four tires, causing noticeable body jolts and steering wheel vibration during high-speed driving; 3. Poor wheel alignment, where large deviation angles in the car's four-wheel alignment lead to body drift and vibration at high speeds. The solutions for steering wheel vibration at speeds above 100 km/h are: 1. Check and optimize tire pressure adjustments, then perform a four-wheel dynamic balance; 2. Perform a four-wheel alignment.