With the appropriate thickness and material, it is possible to increase flexibility while maintaining the mounting accuracy of the wheel, improve the tire’s ability to follow the road surface, and further enhance the grip. Not only drift cars whose tires are hard and easily lose the feeling of contact due to impact from the road surface, etc., as well as touring cars that receive large external force by cornering, stabilize the surface pressure with moderate deflection and draw traction during acceleration. 1.0mm thickness, 4 pieces.