The continuous center rib manages to maintain the surface contact during the drive, which enhances the steering responsiveness and the driving stability. In this manner, the steering becomes faster and more precise in its response to the driver's commands, while the structure is stabilized against the driving pressure affecting the model. The shoulder block placement with the siping placement increases the grip on the road surface, boosting the cornering and maneuvering ability. The heat-resistant compound and the strengthened internal structure optimize the tire shape and ease the high speed pressure off the tire to enable its high speed performing ability. As a result, the tire is able to securely perform at its best high speed capacity.