What Causes Car Body Shaking at High Speed?

[BarrettMarie]

Here are the specific reasons for car body shaking at high speed: 1. Uneven brake disc surface with excessive radial runout. When braking, the contact between the brake pads and the brake disc becomes uneven, causing fluctuating braking force and resulting in body vibration, which is usually noticeable during light braking. 2. Significant deviation in wheel alignment data. Particularly, incorrect front wheel alignment angles and excessive toe-in. 3. Tire pressure that is too high or too low. Higher tire pressure leads to more severe body vibration as speed increases. Low tire pressure can cause the car to feel like it's pulling to one side. 4. Abnormal tire wear. Due to improper wheel alignment or rim deformation, the tire surface wears unevenly, causing body vibration while driving. 5. Rim deformation. When tires are mounted on deformed rims, the tires also deform, leading to an uneven surface and unbalanced wheel dynamics, resulting in shaking while driving.