| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pneumatic tire which improves stable steering performance by securing sufficient rigidity using a bead reinforcing layer, and also improves load durability performance by thoroughly securing a flexible zone on a side wall part.SOLUTION: A bead reinforcing layer, in a cross-sectional view in a tire radial direction and a tire width direction, has a first inflection point at least at a tire radial position, and in a cross-sectional view in a tire circumferential direction and the tire width direction, has a second inflection point at least at two tire circumferential positions. A plurality of unit surfaces, which are partitioned by sectioned and formed by a surface circumferential line segment extending in the tire circumferential direction while moving at least in either of the tire radial direction and the tire width direction from the first inflection point, and a surface radial line segment extending in the tire radial direction while moving at least in either of the tire circumferential direction and the tire width direction from the second inflection point, are formed on the surface of the bead reinforcing layer. Through-holes are formed in the unit surfaces.</p> |
