A tire comprising: a tread portion having an outboard tread edge and an inboard tread edge to be located outboard and inboard of a vehicle, respectively, the tread portion provided, between the inboard tread edge and the outboard tread edge, with three main grooves, the three main grooves extending continuously and circumferentially of the tire so that the tread portion is axially divided into four land regions, the three main grooves including an outboard shoulder main groove disposed closest to the outboard tread edge among the three main grooves, and a crown main groove disposed adjacently to the outboard shoulder main groove on the inboard tread edge side of the outboard shoulder main groove, and the four land regions including an outboard middle land region defined between the outboard shoulder main groove and the crown main groove, wherein the axial width of the outboard middle land region is the largest among the four land regions, characterized in that the outboard middle land region is provided with first inclined grooves each inclined to a first direction with respect to the tire axial direction, second inclined grooves each inclined to the first direction with respect to the tire axial direction, and fourth inclined grooves inclined to a second direction with respect to the tire axial direction, the second direction being opposite to the first direction, the first inclined grooves extend across the entire axial width of the outboard middle land region, the second inclined grooves extend from the crown main groove and are terminated within the outboard middle land region, an angle of each of the first inclined grooves with respect to the tire circumferential direction gradually increases from the crown main groove toward the outboard tread edge, an angle of each of the second inclined grooves with respect to the tire circumferential direction gradually increases from the crown main groove toward the outboard tread edge, and each of the fourth inclined grooves intersects one of the second inclined grooves, and intersects one of the adjacent first inclined grooves at a position on the outboard shoulder main groove side of the midpoint of the length of the first inclined groove. a tread portion having an outboard tread edge and an inboard tread edge to be located outboard and inboard of a vehicle, respectively, the tread portion provided, between the inboard tread edge and the outboard tread edge, with three main grooves, the three main grooves extending continuously and circumferentially of the tire so that the tread portion is axially divided into four land regions, the three main grooves including an outboard shoulder main groove disposed closest to the outboard tread edge among the three main grooves, and a crown main groove disposed adjacently to the outboard shoulder main groove on the inboard tread edge side of the outboard shoulder main groove, and an outboard shoulder main groove disposed closest to the outboard tread edge among the three main grooves, and a crown main groove disposed adjacently to the outboard shoulder main groove on the inboard tread edge side of the outboard shoulder main groove, and the four land regions including an outboard middle land region defined between the outboard shoulder main groove and the crown main groove, wherein the axial width of the outboard middle land region is the largest among the four land regions, characterized in that the outboard middle land region is provided with first inclined grooves each inclined to a first direction with respect to the tire axial direction, second inclined grooves each inclined to the first direction with respect to the tire axial direction, and fourth inclined grooves inclined to a second direction with respect to the tire axial direction, the second direction being opposite to the first direction, first inclined grooves each inclined to a first direction with respect to the tire axial direction, second inclined grooves each inclined to the first direction with respect to the tire axial direction, and fourth inclined grooves inclined to a second direction with respect to the tire axial direction, the second direction being opposite to the first direction, the first inclined grooves extend across the entire axial width of the outboard middle land region, the second inclined grooves extend from the crown main groove and are terminated within the outboard middle land region, an angle of each of the first inclined grooves with respect to the tire circumferential direction gradually increases from the crown main groove toward the outboard tread edge, an angle of each of the second inclined grooves with respect to the tire circumferential direction gradually increases from the crown main groove toward the outboard tread edge, and each of the fourth inclined grooves intersects one of the second inclined grooves, and intersects one of the adjacent first inclined grooves at a position on the outboard shoulder main groove side of the midpoint of the length of the first inclined groove.