What Causes Body Shaking at High Speeds?
2 Answers
High-speed body shaking can be caused by: 1. Uneven brake disc surfaces with excessive radial runout. During braking, the brake pads intermittently contact the discs with varying pressure, creating inconsistent braking force that manifests as noticeable body vibration, particularly during light braking. 2. Significant wheel alignment deviations, especially incorrect front wheel alignment angles or excessive toe-in. 3. Improper tire pressure (either overinflation or underinflation). Overinflated tires intensify vibration at higher speeds, while underinflated tires cause vehicle drift. 4. Abnormal tire wear patterns resulting from misalignment or wheel rim deformation, creating uneven tire surface wear that induces driving vibrations.
I've encountered the issue of car body shaking at high speeds many times while driving, mainly due to unbalanced tires or misalignment. At high speeds, any uneven weight distribution in the tires gets amplified, causing the car body to shake from side to side. Sometimes, uneven tire wear, inconsistent tire pressure, or even slight wheel rim deformation can also trigger shaking. Once, my car shook violently, and upon inspection, I found large chunks of mud stuck in the tires. If not addressed promptly, it can accelerate tire wear and compromise handling safety. My advice is to slow down and pull over as soon as you feel shaking, first checking the tire appearance and pressure. If no obvious issues are found, immediately visit a professional shop for dynamic balancing or four-wheel alignment. Regular tire rotation during maintenance can prevent high-speed issues, saving money and potentially lives.
