What Causes Steering Wheel Vibration at 80 km/h?

2 Answers
Tobias
07/24/25 3:42am
Steering wheel vibration when driving at 80 km/h is mostly caused by improper tire dynamic balance. Performing a dynamic balance adjustment can resolve the issue. Additional information: 1. Dynamic Balance: A car's wheel is an assembly consisting of a tire and a rim. However, due to manufacturing variations, the mass distribution of this assembly may not be perfectly uniform. When the wheel rotates at high speeds, it can create dynamic and static imbalances, leading to wheel wobble and steering wheel vibration during driving. To prevent or correct this phenomenon, weights are added to the wheel in dynamic conditions to balance the edges. 2. Regular Inspection: Tires should undergo periodic dynamic balance checks using a dynamic balance tester. Tire balance is categorized into dynamic balance and static balance. Dynamic imbalance causes wheel wobbling, resulting in wave-like tire wear, while static imbalance leads to bouncing and hopping, often causing flat spots on tires.
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JaylaLee
08/10/25 11:13pm
As a veteran driver with 30 years of experience, I've encountered several instances where the steering wheel starts shaking at around 80 km/h. The most common cause is improper tire dynamic balancing. Tires may become unbalanced during manufacturing or installation, and when the speed reaches 70-90 km/h, the rotation generates vibrations that transmit to the steering wheel. It could also be due to deformed rims or loose wheel bolts. Worn-out suspension components like shock absorbers or lower control arms can exacerbate the vibrations. I remember one time I neglected it, and the continuous shaking caused uneven tire wear and affected steering precision, nearly leading to an accident. I recommend regular four-wheel alignment and tire balancing as fundamental preventive measures. If you notice shaking, don't delay—visit a professional repair shop immediately. They can quickly diagnose and fix the root cause using specialized equipment, preventing minor issues from turning into major problems.
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