A pneumatic tire (10, 100), comprising: land portions that are provided at a tread and are segmented by a circumferential main groove extending along a tire circumferential direction and by lateral main grooves that extend in a direction intersecting with the circumferential main groove and that open onto the circumferential main groove; and raised bottom portions that are provided at the tread at end portions of the lateral main grooves where the lateral main grooves open onto the circumferential main groove, that are integrally provided continuously between a first of the land portions and a second of the land portions that are adjacent to each other in the tire circumferential direction at each of the lateral main grooves, and that are each formed with a top face forming a bottom surface of the lateral main groove and said top face being configured by a sloping face that slopes in a tread depth direction as the top face extends away from the first land portion and the second land portion, respectively; wherein; the lateral main grooves extend at an angle to a tire width direction; the first land portion is positioned on an acute angle side of an intersection angle at each of the bottom rising portions between the circumferential main groove and the lateral main groove; the second land portion is positioned on an obtuse angle side of the intersection angle; the sloping face intersects with the tire circumferential direction as viewed from the lateral main groove extension direction; the raised bottom portions overlap with each other along the tire width direction at side walls respectively extending out from the first land portion and the second land portion; at the raised bottom portions, the sloping face extending out from the second land portion extends between the first land portion and the circumferential main groove; a boundary between the first land portion and the second land portion is curved so as to be convex on the second land portion side; and characterised in that a rib that extends in the tire circumferential direction and is provided adjacent in the tire width direction to the land portions; and a circumferential sipe that is provided between the rib and the land portions and that is formed so as to be shallower than the lateral main grooves. land portions that are provided at a tread and are segmented by a circumferential main groove extending along a tire circumferential direction and by lateral main grooves that extend in a direction intersecting with the circumferential main groove and that open onto the circumferential main groove; and raised bottom portions that are provided at the tread at end portions of the lateral main grooves where the lateral main grooves open onto the circumferential main groove, that are integrally provided continuously between a first of the land portions and a second of the land portions that are adjacent to each other in the tire circumferential direction at each of the lateral main grooves, and that are each formed with a top face forming a bottom surface of the lateral main groove and said top face being configured by a sloping face that slopes in a tread depth direction as the top face extends away from the first land portion and the second land portion, respectively; the lateral main grooves extend at an angle to a tire width direction; the first land portion is positioned on an acute angle side of an intersection angle at each of the bottom rising portions between the circumferential main groove and the lateral main groove; the second land portion is positioned on an obtuse angle side of the intersection angle; the sloping face intersects with the tire circumferential direction as viewed from the lateral main groove extension direction; the raised bottom portions overlap with each other along the tire width direction at side walls respectively extending out from the first land portion and the second land portion; at the raised bottom portions, the sloping face extending out from the second land portion extends between the first land portion and the circumferential main groove; a boundary between the first land portion and the second land portion is curved so as to be convex on the second land portion side; and characterised in that a rib that extends in the tire circumferential direction and is provided adjacent in the tire width direction to the land portions; and a circumferential sipe that is provided between the rib and the land portions and that is formed so as to be shallower than the lateral main grooves.