A tire comprising a tread portion including: a groove portion extending in the tire circumferential direction; a first land portion positioned toward an inner side in a tire width direction and having a first groove wall forming the groove portion ; and a second land portion facing the first land portion in the tire width direction and having a second groove wall forming the groove portion , wherein a protrusion continuing from the first groove wall to the second groove wall is provided at a groove bottom of the groove portion continuing to the first groove wall and the second groove wall , wherein at least one of a first end of the protrusion connected to the first groove wall and a second end of the protrusion connected to the second groove wall has a slit crossing the protrusion , characterized in that in a tread surface view of the tire , the protrusion includes a linear portion extending linearly, and at least one curved portion continuing to the linear portion and curved toward the tire circumferential direction, in a tread surface view of the tire , the curvature radius of the curved portion is 3 times or more and 10 times or less the groove width of the groove portion in the tire width direction, the first land portion has a shallow groove whose depth is shallower than a depth of the groove portion in the tire radial direction, the shallow groove extending at an angle with respect to the tire width direction, and being open to the groove portion , and the linear portion of the protrusion extends at an angle in a direction that is identical to a direction in which the shallow groove extends at an angle with respect to the tire circumferential direction. a groove portion extending in the tire circumferential direction; a first land portion positioned toward an inner side in a tire width direction and having a first groove wall forming the groove portion ; and a second land portion facing the first land portion in the tire width direction and having a second groove wall forming the groove portion , wherein a protrusion continuing from the first groove wall to the second groove wall is provided at a groove bottom of the groove portion continuing to the first groove wall and the second groove wall , wherein at least one of a first end of the protrusion connected to the first groove wall and a second end of the protrusion connected to the second groove wall has a slit crossing the protrusion , characterized in that in a tread surface view of the tire , the protrusion includes a linear portion extending linearly, and at least one curved portion continuing to the linear portion and curved toward the tire circumferential direction, a linear portion extending linearly, and at least one curved portion continuing to the linear portion and curved toward the tire circumferential direction, in a tread surface view of the tire , the curvature radius of the curved portion is 3 times or more and 10 times or less the groove width of the groove portion in the tire width direction, the first land portion has a shallow groove whose depth is shallower than a depth of the groove portion in the tire radial direction, the shallow groove extending at an angle with respect to the tire width direction, and being open to the groove portion , and the linear portion of the protrusion extends at an angle in a direction that is identical to a direction in which the shallow groove extends at an angle with respect to the tire circumferential direction. <EOS>