Pneumatic tire

A pneumatic tire includes a tread surface having four main grooves extending in a circumferential direction of the tire. The four main grooves consist of two inner main grooves disposed on both sides of an equatorial plane of the tire and two outer main grooves disposed outwardly of the two inner main grooves. Three land portions extending in the tire circumferential direction are formed in a center region located between the two outer main grooves, and a land portion extending in the tire circumferential direction is formed in each of shoulder regions located outwardly of the two outer main grooves. The ratio B/A of the ground contact length B of the outer edge of the land portion in the shoulder region to the ground contact length A of the central land portion of the three land portions in the center region is in the range of 0.80 to 0.95, and the ratio C/B of the ground contact length C of the inner edge of the land portion in the shoulder region to the ground contact length B of the outer edge thereof is in the range of 0.90 to 1.00.