| 主权项 |
1. A pneumatic tire comprising on a tread surface at least one circumferential main groove continuously extending in a tire circumferential direction and having a groove width cyclically varying in the tire circumferential direction, and a lib-like land portion forming a side wall surface on at least one side in a tire width direction of the circumferential main groove, wherein:
among the lib-like land portions, a lib-like land portion disposed on at least one side in the tire width direction of the circumferential main groove is formed in a shape such that: in a tire widthwise cross sectional view, an outline shape of the lib-like land portion has a shape which forms a protrusion on an outer side in the tire radial direction, the protrusion having an apex at an outermost position in a tire radial direction, a tire widthwise position of the apex being equal on a tire circumference; in a tire widthwise cross sectional view, a widthwise end portion adjacent to the circumferential main groove of the lib-like land portion is located on a side 0.3 mm or more inner in the tire radial direction than an tire radial position of the apex; and an area on a tire widthwise end side inclusive of the widthwise end portion of the tread surface of the lib-like land portion has a descending area located on a side 0.3 mm or more inner in the tire radial direction than the tire radial position of the apex, the tire widthwise width of the descending area being 3% or more of the tire widthwise width of the lib-like land portion at the tire circumferential position of the descending area. |
