| 摘要 |
PURPOSE:To improve the high-speed driving durability of a tire preventing air from remaining between a belt auxiliary layer and a belt. CONSTITUTION:There are provided a radial carcass 2 which extends in a toroid shape between a pair of bead rings, plural belt layers 3a, 3b, a belt auxiliary layer 4 and a tread 5 which are located at the outer peripheral side of the crown part of the radial carcass 2 in order in a pneumatic radial tire. Besides, a belt auxiliary layer 6 is formed by spiral winding a ribbon-shaped reinforcement layer 6 which is made by rubber-coating plural reinforcement cords 7 extending roughly parallel to each other in a waveform around a part facing, at least, the side part, range of the belt, layers 3a, 3b in an overlapped condition with each other. |
