This structure allows the tire to keep the ideal tire shape under the load and driving pressure. The four steel belt structure allows the tire to maintain the ideal tire shape under the load and driving pressure. As the tire does not deform, it is able to significantly boost the overall load capacity. On the other hand, the maintained optimal shape and the ribbed tread design increase the surface contact, which boosts the steering responsiveness and driving stability. This allows the tire to improve the steering response time and accuracy to the driver's commands, while the structure is secured at all times.