The ribbed pattern's surface contact boosts steering responsiveness and driving stability. As a result, better road contact greatly improves the steering response time and accuracy to the driver's commands, while the structure is secured against the driving pressure affecting the tire. The outer shoulder block pattern, with the siping placement, firmly grips the road surface with extra biting edges, upgrading the cornering ability. This guarantees secure maneuvering. The high-density sipes generate friction between the tire and the road surface, greatly shortening the braking distance.