A tire comprising: a first land portion having a first groove wall; and a second land portion having a second groove wall, the second land portion separated from the first land potion by a main groove extending in a tire circumferential direction and formed by the first and second groove walls, wherein: the first groove wall and the second groove wall meander in the tire circumferential direction in a tread surface view, a groove width of the main groove in a tread width direction changes in predetermined cycles in the tire circumferential direction, the first land portion includes: a wide land portion in which a width of the first land portion in the tread width direction is a predetermined width; and a narrow land portion in which the width of the first land portion in the tread width direction is narrower than the predetermined width, and characterised in that a surface of the wide land portion is provided with an elongated recess portion recessed inward in a tire radial direction from a surface of the first land portion and extending, in the tread surface view, in the tire circumferential direction, wherein in the tread surface view, the recess portion is formed in such a tapered shape that a width dimension of the recess portion in the tread width direction gradually becomes smaller toward an end portion of the recess portion in the tire circumferential direction. a first land portion having a first groove wall; and a second land portion having a second groove wall, the second land portion separated from the first land potion by a main groove extending in a tire circumferential direction and formed by the first and second groove walls, wherein: the first groove wall and the second groove wall meander in the tire circumferential direction in a tread surface view, a groove width of the main groove in a tread width direction changes in predetermined cycles in the tire circumferential direction, the first land portion includes: a wide land portion in which a width of the first land portion in the tread width direction is a predetermined width; and a narrow land portion in which the width of the first land portion in the tread width direction is narrower than the predetermined width, and characterised in that a surface of the wide land portion is provided with an elongated recess portion recessed inward in a tire radial direction from a surface of the first land portion and extending, in the tread surface view, in the tire circumferential direction, wherein in the tread surface view, the recess portion is formed in such a tapered shape that a width dimension of the recess portion in the tread width direction gradually becomes smaller toward an end portion of the recess portion in the tire circumferential direction. the first groove wall and the second groove wall meander in the tire circumferential direction in a tread surface view, a groove width of the main groove in a tread width direction changes in predetermined cycles in the tire circumferential direction, the first land portion includes: a wide land portion in which a width of the first land portion in the tread width direction is a predetermined width; and a narrow land portion in which the width of the first land portion in the tread width direction is narrower than the predetermined width, and characterised in that a wide land portion in which a width of the first land portion in the tread width direction is a predetermined width; and a narrow land portion in which the width of the first land portion in the tread width direction is narrower than the predetermined width, and characterised in that a surface of the wide land portion is provided with an elongated recess portion recessed inward in a tire radial direction from a surface of the first land portion and extending, in the tread surface view, in the tire circumferential direction, wherein in the tread surface view, the recess portion is formed in such a tapered shape that a width dimension of the recess portion in the tread width direction gradually becomes smaller toward an end portion of the recess portion in the tire circumferential direction.