A tire comprising: a tread portion comprising a first main groove and a second main groove extending continuously in a tire circumferential direction, and a land region defined between the first main groove and the second main groove, the land region being provided with a plurality of lateral grooves, wherein each of the lateral grooves comprises a first lug groove portion extending obliquely with respect to a tire axial direction from the first main groove, a second lug groove portion extending obliquely in a same direction as the first lug groove portion from the second main groove, and a sipe portion extending obliquely in an opposite direction to the first lug groove portion so as to connect between the first lug groove portion and the second lug groove portion, wherein the sipe portions have a groove width not greater than 1.5 mm, and the first and second lug groove portions (16, 17) have a width that is greater than 1.5 mm, wherein the first and second lug groove portions (16, 17) terminate without reaching a center position in the tire axial direction of the land region, and each sipe portion is disposed between the axially inner ends of a pair of first and second lug groove portions (16, 17), characterized in that the sipe portion has a length in the tire axial direction in a range of from 0.65 to 0.75 times the lengths of the first lug groove portion and the second lug groove portion in the tire axial direction, wherein angles (θ1) of the first lug groove portions and the second lug groove portions with respect to the tire axial direction are in a range of from 20 to 30 degrees, and wherein angles (θ2) of the sipe portions with respect to the tire axial direction are in a range of from 25 to 40 degrees. a tread portion comprising a first main groove and a second main groove extending continuously in a tire circumferential direction, and a land region defined between the first main groove and the second main groove, the land region being provided with a plurality of lateral grooves, wherein a first main groove and a second main groove extending continuously in a tire circumferential direction, and a land region defined between the first main groove and the second main groove, the land region being provided with a plurality of lateral grooves, wherein each of the lateral grooves comprises a first lug groove portion extending obliquely with respect to a tire axial direction from the first main groove, a second lug groove portion extending obliquely in a same direction as the first lug groove portion from the second main groove, and a sipe portion extending obliquely in an opposite direction to the first lug groove portion so as to connect between the first lug groove portion and the second lug groove portion, wherein the sipe portions have a groove width not greater than 1.5 mm, and the first and second lug groove portions (16, 17) have a width that is greater than 1.5 mm, wherein the first and second lug groove portions (16, 17) terminate without reaching a center position in the tire axial direction of the land region, and each sipe portion is disposed between the axially inner ends of a pair of first and second lug groove portions (16, 17), characterized in that the sipe portion has a length in the tire axial direction in a range of from 0.65 to 0.75 times the lengths of the first lug groove portion and the second lug groove portion in the tire axial direction, wherein angles (θ1) of the first lug groove portions and the second lug groove portions with respect to the tire axial direction are in a range of from 20 to 30 degrees, and wherein angles (θ2) of the sipe portions with respect to the tire axial direction are in a range of from 25 to 40 degrees. a first lug groove portion extending obliquely with respect to a tire axial direction from the first main groove, a second lug groove portion extending obliquely in a same direction as the first lug groove portion from the second main groove, and a sipe portion extending obliquely in an opposite direction to the first lug groove portion so as to connect between the first lug groove portion and the second lug groove portion, wherein the sipe portions have a groove width not greater than 1.5 mm, and the first and second lug groove portions (16, 17) have a width that is greater than 1.5 mm, wherein the first and second lug groove portions (16, 17) terminate without reaching a center position in the tire axial direction of the land region, and each sipe portion is disposed between the axially inner ends of a pair of first and second lug groove portions (16, 17), characterized in that the sipe portion has a length in the tire axial direction in a range of from 0.65 to 0.75 times the lengths of the first lug groove portion and the second lug groove portion in the tire axial direction, wherein angles (θ1) of the first lug groove portions and the second lug groove portions with respect to the tire axial direction are in a range of from 20 to 30 degrees, and wherein angles (θ2) of the sipe portions with respect to the tire axial direction are in a range of from 25 to 40 degrees.