A pneumatic tire having a tread pattern formed in a tread portion, wherein the tread pattern includes: two first circumferential main grooves (11, 13) parallel to a tire circumferential direction, the two first circumferential main grooves (11, 13) being disposed on both sides of a centerline of the tire in a tire width direction; shoulder land portions (51, 53) formed in regions outside the first circumferential main grooves (11, 13) in the tire width direction; shoulder lug grooves (61, 63) provided in regions of the shoulder land portions (51, 53), the shoulder lug grooves (61, 63) extending from outer sides in the tire width direction toward the first circumferential main grooves (11, 13), the shoulder lug grooves (61, 63) being closed off midway without connecting with the first circumferential main grooves (11, 13), and the shoulder lug grooves (61, 63) including first regions (61A, 63A) and second regions (61B, 63B), the second regions (61B, 63B) disposed in regions closer to the first circumferential main grooves (11, 13) than the first regions (61A, 63A) and having a shallower groove depth (61Bd, 64Bd) than the first regions (61A, 63A); shoulder sipes (62, 64) formed in the regions of the shoulder land portions (51, 53), the shoulder sipes (62, 64) being connected to the second regions (61B, 63B) of the shoulder lug grooves (61, 63), and the shoulder sipes (62, 64) extending toward the first circumferential main grooves (11, 13); and narrow circumferential grooves (71, 73) formed in the regions of the shoulder land portions (51, 53), the narrow circumferential grooves (71, 73) extending in the tire circumferential direction, and the narrow circumferential grooves (71, 73) having a narrower groove width (71w, 73w) than the shoulder lug grooves (61, 63); the narrow circumferential grooves (71, 73) intersecting with the second regions (61B, 63B) of the shoulder lug grooves (61, 63), characterized in that the shoulder lug grooves (61, 63) further include closed wall portions (61e, 63e) extending so as to connect the floors (61Bb, 63Bb) of the grooves in the second regions (61B, 63B) and a tread surface, and stepped portions connecting the floors (61Ab, 63Ab) of the grooves in the first regions (61A, 63A) and the floors (61Bb, 63Bb) of the grooves (61, 63) in the second regions (61B, 63B), and the closed wall portions (61e, 63e) and the stepped portions are each inclined at an angle (Θ; δ) from 10 to 60° outward in the tire width direction with respect to a direction opposite the direction of the normal line of the tread surface. two first circumferential main grooves (11, 13) parallel to a tire circumferential direction, the two first circumferential main grooves (11, 13) being disposed on both sides of a centerline of the tire in a tire width direction; shoulder land portions (51, 53) formed in regions outside the first circumferential main grooves (11, 13) in the tire width direction; shoulder lug grooves (61, 63) provided in regions of the shoulder land portions (51, 53), the shoulder lug grooves (61, 63) extending from outer sides in the tire width direction toward the first circumferential main grooves (11, 13), the shoulder lug grooves (61, 63) being closed off midway without connecting with the first circumferential main grooves (11, 13), and the shoulder lug grooves (61, 63) including first regions (61A, 63A) and second regions (61B, 63B), the second regions (61B, 63B) disposed in regions closer to the first circumferential main grooves (11, 13) than the first regions (61A, 63A) and having a shallower groove depth (61Bd, 64Bd) than the first regions (61A, 63A); shoulder sipes (62, 64) formed in the regions of the shoulder land portions (51, 53), the shoulder sipes (62, 64) being connected to the second regions (61B, 63B) of the shoulder lug grooves (61, 63), and the shoulder sipes (62, 64) extending toward the first circumferential main grooves (11, 13); and narrow circumferential grooves (71, 73) formed in the regions of the shoulder land portions (51, 53), the narrow circumferential grooves (71, 73) extending in the tire circumferential direction, and the narrow circumferential grooves (71, 73) having a narrower groove width (71w, 73w) than the shoulder lug grooves (61, 63);