Overall Optimization of Tire Performance with Emphasis on Rolling Resistance

The fullest possible optimization of radial tire performance is somewhat restricted by several life limiting design features. For example, the belt edge, and lower side wall turn up ply discontinuities are first order among many such difficulties. Generally these problems cannot be completely mitigated because of a variety of factors including, the intrinsic stress gradient concentrating nature of ply ends,  and inherent manufacturing QC issues which are difficult to correct in a cost effective manner. Within the product mileage certification, robustness/safety has been reliably assured through extensive analysis and testing, . The paper explores several design modifications which appear to bypass or at least mitigate such issues thus enabling  more robust operational properties and greater latitude to reach optimality through material - filler selection, compounding, belt lay-up, carcass and tread adjustments. Rolling resistance will be targeted to illustrate the improvement optimality potential.