What is the function of front wheel toe-in?

[DelKennedy]

The function of front wheel toe-in is to eliminate the adverse effects caused by wheel camber, ensuring that the wheels do not roll outward, preventing wheel side slip and reducing tire wear. The toe-in value can be adjusted by changing the length of the steering tie rod, generally ranging from 0 to 12mm. Front wheel toe-in refers to the distance difference between the front and rear edges of the front wheels in the transverse direction of the vehicle, or it can refer to the angle between the direction of the vehicle's forward movement and the plane of the front wheels, in which case it is also called the toe-in angle. Due to the camber of the front wheels, the left and right wheels are often subjected to opposing side thrust forces corresponding to the camber angle, increasing tire wear. To avoid this, it is necessary to find a way to eliminate this side thrust. The solution is to install the wheels in such a way that the central planes of the two front wheels are not parallel, with the distance between the front edges being less than that between the rear edges. The difference between these distances is the front wheel toe-in.