Why does the steering wheel shake left and right at 120 km/h?

[LeAiden]

The reasons for the steering wheel shaking left and right at 120 km/h are as follows: Common causes: The most common reason is that the tires and rims need wheel balancing. Or the tires may be aged and deformed, or the rims may be deformed. Wheel balancing can be performed based on the situation. During wheel balancing, be sure to check the condition of the tires and rims, and replace any deformed parts. Other causes: The engine fault light is already on or suddenly turns on. If the engine fault light is already on or suddenly turns on, accompanied by body shaking. This situation is caused by improper engine air-fuel mixture matching. Common problem areas include spark plugs, ignition coils, fuel injectors, carbon deposits, fuel pumps, etc.

[VonZane]

I experienced severe steering wheel shaking while driving, feeling as tense as driving on a washboard. Common causes include wheel imbalance, such as improper tire installation or uneven air pressure, leading to vibrations at high speeds. It could also be due to uneven tire wear or slight wheel hub deformation. Additionally, aging suspension components like failed shock absorbers can amplify the shaking. It's recommended to visit a repair shop promptly for a tire dynamic balance check, which is affordable and typically costs around a hundred yuan. Regular maintenance should include checking tire pressure and wear patterns to prevent cumulative issues. Ignoring this poses significant risks—high-speed shaking compromises control and increases accident probability. Safety comes first; don't wait for an incident to address it.

[DelLondon]

From a technical perspective, steering wheel vibration at 120km/h is often caused by wheel imbalance issues. When wheels rotate at high speeds with significant balance deviation, vibrations are directly transmitted to the steering wheel. Uneven tire wear or incorrect tire pressure are also common culprits. It may also involve damaged wheel hub bearings or loose suspension components, leading to reduced stability at high speeds. I recommend conducting a comprehensive inspection first, focusing on wheel balancing and four-wheel alignment to ensure system coordination. Delaying repairs for such faults may accelerate steering system wear and lead to higher repair costs. Develop a habit of regularly monitoring wheel conditions to prevent minor issues from escalating into major problems.

[MacKylie]

When the steering wheel shakes left and right at high speeds, immediate attention is required. Slow down promptly and pull over to inspect the vehicle. The issue is most likely tire-related, such as imbalance or damage from foreign objects. It could also be due to failed suspension components affecting driving stability. Continuing to drive at high speeds significantly increases the risk of losing control, especially on slippery roads where the danger doubles. Check for consistent tire pressure and visible wheel wear. For safety, it's advisable to take the car to a professional repair shop immediately and avoid high-speed night driving with such hazards. Regular tire maintenance is crucial to ensure safe driving.