| 摘要 |
<p>There is provided a pneumatic tire capable of reducing rolling resistance and suppressing river wear of uneven wear. A pneumatic tire according to the present invention comprises a tread portion provided with one or more circumferential grooves extending in parallel with a tire equator to define a plurality of land portions, wherein at least surface rubber of the tread portion has tan´of not less than 0.02 and not more than 0.2, a wall angle of a widthwise outer wall of the circumferential groove is larger than a wall angle of a widthwise inner wall of the circumferential groove, a plurality of sipes extending in a direction across the tire equator are provided in the land portions, and a length of the sipe formed in an end portion of the land portion arranged adjacent to the circumferential groove in the widthwise outer side is longer than a length of the sipe formed in an end portion of the land portion arranged adjacent to the circumferential groove in the widthwise inner side.</p> |
