Why Does the Steering Wheel Shake When Driving Fast?

[McMaggie]

The reason for the steering wheel shaking when driving fast is related to the tires. The tires must be balanced when rolling, which requires detection with a specialized dynamic balance machine. Then, counterweights are attached to the unbalanced tires to improve balance. Once the wheel dynamic balance is off, the car will experience radial wheel vibrations when driving. These vibrations are transmitted to the steering wheel through the steering mechanism, causing the steering wheel to shake. The four wheels of the car should be perpendicular to the ground. If they tilt inward or outward, the car will shake when driving. If the condition is severe, not only high-speed driving but even normal road conditions will feel unbalanced. The more precise the four-wheel alignment, the more stable the car will run.