A tire comprising a tread portion , wherein the tread portion is provided with a sipe , characterized in that the sipe comprises a portion in which a plurality of repeat units are connected in series in the length direction of the sipe , each of the repeat units is bent so that four sipe segments form acute angles with each other, said four sipe segments include a first sipe segment extending in a tire axial direction at an angle of +/- 5 degrees with respect to the tire axial direction, a second sipe segment extending from an end in a first tire axial direction of the first sipe segment toward a first tire circumferential direction (a), a third sipe segment extending in the first tire axial direction from the second sipe segment at an angle of +/- 5 degrees with respect to the tire axial direction, and a fourth sipe segment connected to the third sipe segment and extending from the third sipe segment toward a second tire circumferential direction (b) opposite to the first tire circumferential direction (a), the length of the fourth sipe segment being larger than the length of the second sipe segment , and at least one of the first sipe segment and the third sipe segment comprises, in the cross section orthogonal to the length direction, an oscillated portion which extends in a tire radial direction, while oscillating in a lateral direction orthogonal to said length direction. the tread portion is provided with a sipe , characterized in that the sipe comprises a portion in which a plurality of repeat units are connected in series in the length direction of the sipe , each of the repeat units is bent so that four sipe segments form acute angles with each other, said four sipe segments include a first sipe segment extending in a tire axial direction at an angle of +/- 5 degrees with respect to the tire axial direction, a second sipe segment extending from an end in a first tire axial direction of the first sipe segment toward a first tire circumferential direction (a), a third sipe segment extending in the first tire axial direction from the second sipe segment at an angle of +/- 5 degrees with respect to the tire axial direction, and a fourth sipe segment connected to the third sipe segment and extending from the third sipe segment toward a second tire circumferential direction (b) opposite to the first tire circumferential direction (a), the length of the fourth sipe segment being larger than the length of the second sipe segment , and a first sipe segment extending in a tire axial direction at an angle of +/- 5 degrees with respect to the tire axial direction, a second sipe segment extending from an end in a first tire axial direction of the first sipe segment toward a first tire circumferential direction (a), a third sipe segment extending in the first tire axial direction from the second sipe segment at an angle of +/- 5 degrees with respect to the tire axial direction, and a fourth sipe segment connected to the third sipe segment and extending from the third sipe segment toward a second tire circumferential direction (b) opposite to the first tire circumferential direction (a), the length of the fourth sipe segment being larger than the length of the second sipe segment , and at least one of the first sipe segment and the third sipe segment comprises, in the cross section orthogonal to the length direction, an oscillated portion which extends in a tire radial direction, while oscillating in a lateral direction orthogonal to said length direction. <EOS>