The ribbed pattern with the optimal siping detail firmly grips the road surface, enhancing the steering responsiveness and driving stability. In this manner, the steering becomes faster and more precise, while the structure is stabilized against the driving pressure affecting the tire. The summer weather compound prevents heat build-up on the tire during its high speed performance. This avoids the deformity of the tread design and the tire shape under the high speed driving pressure, enabling the model to perform to its utmost capability.