What are the four components of steering wheel alignment?

[JosephFitz]

Steering wheel alignment includes four components: caster angle, kingpin inclination angle, wheel camber, and toe-in. The benefits of wheel alignment and situations that require wheel alignment are: 1. Tire benefits: After wheel alignment, the tires can maintain a good angle with the vehicle body, improving grip while ensuring comfort, enhancing control, saving fuel, and greatly improving safety; 2. Wheel alignment is required when the chassis and suspension are damaged due to an accident; 3. Wheel alignment is necessary after replacing the steering system or its components; 4. Wheel alignment is needed when there is uneven wear on the inner or outer sides of the front or rear tires; 5. Wheel alignment is required after replacing or adjusting the suspension system; 6. Wheel alignment is necessary when the vehicle drifts to the left or right while driving straight.