Collapse – is the angle between the plane of the wheel and the vertical. It can be positive if the wheels are tilted outward or negative if the wheels are tilted inward. The camber angle mainly affects the uniformity of wear of the front tires. If the camber of one wheel is positive and the other is negative, the car will pull to the side when driving straight.
Convergence – is the projection of the angle between the plane of the wheel and the horizontal axis of the car onto the horizontal plane. Positive toe-in means that the wheels at the front are closer together than at the rear when measured at the height of the midpoint of the wheel. Negative toe-in means that the wheels at the front are further apart than at the rear.
Lateral tilt of the wheel pivot axis – this is the angle between the axis of rotation of the steering knuckle and the vertical, projected onto the vertical plane across the car.
Due to the camber angles and the transverse tilt of the steering axis, the points of contact of the wheels with the road are located closer to the axis of the steering knuckle. This supports the so-called "rolling shoulder", the easier it is to control the car. Also, impacts from uneven surfaces are less transmitted to the steering.
Longitudinal tilt of the wheel pivot axis. The axis around which the wheel turns is placed in space so that its lower part is directed forward. Such an angle of longitudinal inclination is called positive. With a positive angle, the self-return of the wheel to the middle position after turning is improved.
Rear wheel alignment adjustment
Rear wheel alignment adjustment