The high-tensile steel belt and jointless cover structure work together to upgrade the high speed durability. They improve the structural durability, maintaining the ideal tire shape under the high speed pressure, while the compound prevents heat build-up. This combination allows the tire to enhance the high speed durability. The advanced directional block pattern and the solid center rib enhance the steering responsiveness and the driving stability. The shoulder detail enhances the cornering ability with the use of extra biting edges, improving the performing ability and power.