A pneumatic tire comprising: a tread, wherein the tread includes: a plurality of oblique grooves (20, 21), each extending from a ground-contacting end to an equator; a plurality of blocks (100, 101), each formed along the oblique groove (20, 21) and alternately placed with the oblique groove (20, 21) in a tire circumferential direction; and a plurality of circumferential grooves (25, 26, 27, 28, 29) which partition the block (100, 101) into a shoulder zone (50, 60) positioned on the side of the ground-contacting end, a center zone (30, 40) positioned on the side of the equator, and an intermediate zone (70, 80) positioned between the shoulder zone (50, 60) and the center zone (30, 40), a ground-contacting area of the intermediate zone (70, 80) is greater than or equal to a ground-contacting area of the shoulder zone (50, 60), a sum of ground-contacting areas of the intermediate zone (70, 80) and the center zone (30, 40) is 1.7 times to 2.0 times a ground-contacting area of the shoulder zone (50, 60), and when a sum of the ground-contacting areas of the shoulder zone (50, 60), the intermediate zone (70,80), and the center zone (30, 40) is 100%, the ground-contacting area of the shoulder zone (50, 60) is 33% to 38%, the ground-contacting area of the intermediate zone (70, 80) is 35% to 40%, and the ground-contacting area of the center zone (30, 40) is 25% to 32%, and the ground-contacting area of the intermediate zone (70, 80) is larger than the ground-contacting area of the shoulder zone (50, 60) and equal to or smaller than 1.3 times the ground-contacting area of the shoulder zone (50, 60), wherein the ground-contacting area of each block of the pneumatic tire 1 refers to an area of the portion contacting the flat road surface under application of the load which is 80% of the maximum load capability at the regular internal pressure. a tread, wherein the tread includes: a plurality of oblique grooves (20, 21), each extending from a ground-contacting end to an equator; a plurality of blocks (100, 101), each formed along the oblique groove (20, 21) and alternately placed with the oblique groove (20, 21) in a tire circumferential direction; and a plurality of circumferential grooves (25, 26, 27, 28, 29) which partition the block (100, 101) into a shoulder zone (50, 60) positioned on the side of the ground-contacting end, a center zone (30, 40) positioned on the side of the equator, and an intermediate zone (70, 80) positioned between the shoulder zone (50, 60) and the center zone (30, 40), a ground-contacting area of the intermediate zone (70, 80) is greater than or equal to a ground-contacting area of the shoulder zone (50, 60), a sum of ground-contacting areas of the intermediate zone (70, 80) and the center zone (30, 40) is 1.7 times to 2.0 times a ground-contacting area of the shoulder zone (50, 60), and when a sum of the ground-contacting areas of the shoulder zone (50, 60), the intermediate zone (70,80), and the center zone (30, 40) is 100%, the ground-contacting area of the shoulder zone (50, 60) is 33% to 38%, the ground-contacting area of the intermediate zone (70, 80) is 35% to 40%, and the ground-contacting area of the center zone (30, 40) is 25% to 32%, and the ground-contacting area of the intermediate zone (70, 80) is larger than the ground-contacting area of the shoulder zone (50, 60) and equal to or smaller than 1.3 times the ground-contacting area of the shoulder zone (50, 60), wherein the ground-contacting area of each block of the pneumatic tire 1 refers to an area of the portion contacting the flat road surface under application of the load which is 80% of the maximum load capability at the regular internal pressure. a plurality of oblique grooves (20, 21), each extending from a ground-contacting end to an equator; a plurality of blocks (100, 101), each formed along the oblique groove (20, 21) and alternately placed with the oblique groove (20, 21) in a tire circumferential direction; and a plurality of circumferential grooves (25, 26, 27, 28, 29) which partition the block (100, 101) into a shoulder zone (50, 60) positioned on the side of the ground-contacting end, a center zone (30, 40) positioned on the side of the equator, and an intermediate zone (70, 80) positioned between the shoulder zone (50, 60) and the center zone (30, 40), a ground-contacting area of the intermediate zone (70, 80) is greater than or equal to a ground-contacting area of the shoulder zone (50, 60), a sum of ground-contacting areas of the intermediate zone (70, 80) and the center zone (30, 40) is 1.7 times to 2.0 times a ground-contacting area of the shoulder zone (50, 60), and when a sum of the ground-contacting areas of the shoulder zone (50, 60), the intermediate zone (70,80), and the center zone (30, 40) is 100%, the ground-contacting area of the shoulder zone (50, 60) is 33% to 38%, the ground-contacting area of the intermediate zone (70, 80) is 35% to 40%, and the ground-contacting area of the center zone (30, 40) is 25% to 32%, and the ground-contacting area of the intermediate zone (70, 80) is larger than the ground-contacting area of the shoulder zone (50, 60) and equal to or smaller than 1.3 times the ground-contacting area of the shoulder zone (50, 60), wherein the ground-contacting area of each block of the pneumatic tire 1 refers to an area of the portion contacting the flat road surface under application of the load which is 80% of the maximum load capability at the regular internal pressure.