A shoulder main body portion 42 of a first shoulder block 41 is formed with a step portion 44 projecting out in a tire circumferential direction S. A height of the step portion 44 is set lower than a height of a tread face of the shoulder main body portion 42 and higher than the height of a lug groove 18A. The step portion 44 extends from a tire equatorial plane CL side end portion of the shoulder main body portion 42, beyond a tire width direction ground contact edge 12E, to a tire shoulder portion 13.