[Uniformity] Lateral Force Variation

If a load is applied at a constant radius to a rotating tire, it will generate a lateral force and a Lateral Force Variation. As the tire turns, it undergoes repeated deformation and recovery as it enters and exits the contact area. If the lateral force is measured between the tire and the road surface the lateral force will vary as the tire turns. The average value of this generated lateral force is called Lateral Shift. Lateral Force Variation is the small amount of variation in lateral force around the lateral shift. The change in these forces is due to inconsistencies in the tire tread and sidewall area.

 

Lateral Force Variation