Provided is a pneumatic tire including center main grooves, shoulder main grooves, a center land portion, middle land portions, shoulder land portions, and lug grooves provided in each shoulder land portion. The pitch of the lug grooves is changed on the tire circumference. The profile line L1 that defines the road contact surface of the center land portion protrudes further to the outer side in the tire radial direction than the standard profile line L0. The profile line L2 that defines the road contact surface of the middle land portion and the shoulder land portion protrudes further to the outer side in the tire radial direction than the standard profile line L0. The ratio of the groove volume of the lug grooves to the size of the pitch of the lug grooves in the shoulder land portion decreases as the pitch increases, and increases as the pitch decreases.