Why does the steering wheel shake while driving on the highway?

[LeonardoFitz]

The reasons for steering wheel shaking while driving on the highway are: 1. Uneven brake disc surface with excessive radial runout; 2. Significant deviation in wheel alignment data; 3. Excessive or insufficient tire pressure; 4. Abnormal tire wear; 5. Rim deformation; 6. Shock absorber failure; 7. Tire dynamic balance issues; 8. Engine power malfunction. Solutions for steering wheel shaking while driving on the highway include: 1. Inspect and adjust front wheel alignment angles and toe-in; 2. Perform wheel dynamic balance checks; 3. Adjust tire pressure or replace tires; 4. Conduct driveshaft dynamic balance checks; 5. Use high-quality engine oil; 6. Inspect the engine ignition system.