| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pneumatic tire in which on-ice brake performance and dry performance upon running on a dry road can be compatible.SOLUTION: In a pneumatic tire in which plural sipes are arranged with a spacing to other in the tire circumferential direction on a tread surface of a tread part, a crown shape of the tread part in the tire width direction cross-section is formed by connecting plural arcs of a curvature radius different to each other which have the curvature center at the tire lumen side from the tread center to the tread end. Supposing each curvature radius different to each other of the plural arcs as R, R,..., Rin the order from the tread center to the tread end, the curvature radii R, R,..., Rsatisfy the relationships of R>R>...>Rand R/R<R/R(n≥3). The interval I along the tire circumferential direction between adjacent sipes in the tire circumferential direction arranged at the tread surface shall be within the range of 4.0 to 8.0 mm.</p> |
