The effect of the geometry of the tire and the inflated pressure on the tire sideforce

The performance specifications of vehicles on the road are the result of dynamic interaction of various components of the vehicle structure. But the car tire because it is directly in contact with the road surface and plays an important role. Indeed the tire is the generator of the forces and moments which control vehicle motion. However the tire’s structure is relatively complex but defining specific parameters can simplify modeling the behavior of complexity of the structure and behavior of the tire is too comprehensive so that ever theory that could answer many questions in predicting tire performance is not provided. Theories presented by embellishment from relations or parameters that are obtained through empirical-rather than mathematical analysis and physical-are mixed. Here our purpose to describe the effect of the geometry of the tire and the inflated pressure on the tire side force which plays an essential role in the tire dynamic behavior.