What Causes Steering Wheel Vibration at 120 km/h?
2 Answers
Here are the specific reasons for steering wheel vibration when braking at 120 km/h: 1. Wheel Balancing Issue: A car wheel consists of a tire and rim. When there's a wheel balancing problem, it means the wheel isn't in a balanced state during high-speed driving. If the balancing data is incorrect, the wheel's rotation center will shift, causing vibration that transmits to the steering wheel. 2. Rim Problem: If the rim has previously suffered impact damage leading to deformation, this can also cause wheel vibration during driving, resulting in steering wheel shake. 3. Chassis Component Issue: This typically occurs in poorly repaired post-accident vehicles. Impact damage to chassis components during collisions can also cause steering wheel vibration.
Driving at 120 km/h on the highway with noticeable steering wheel shaking—I’ve dealt with this issue many times, and it’s mostly due to wheel imbalance. Either the wheel weights fell off or the rim is deformed, which becomes especially obvious at high speeds. Once, I encountered a guy whose tires were worn into a锯齿状 (sawtooth) pattern—steering wheel danced like crazy over 100 km/h. Regularly check tire pressure to ensure consistency. Last month, I saw a car that vibrated badly because the left front tire was underinflated. Loose suspension ball joints or warped brake discs can also cause this. My advice: don’t ignore it—first, spend 20 bucks at a local shop for a wheel balance test; it usually pinpoints the problem. During maintenance, monitor tire wear, and before highway trips, use a coin to check tread depth.
