An inclined groove (11) has a first inclined groove (101) and a second inclined groove (102). The first inclined groove (101) intersects a tire equator line (CL) and extends to one side (W1) outward in the tire width direction proceeding from the forward side (F) to the rearward side (B) in the rotation direction. The second inclined groove (102) intersects the tire equator line (CL) and the first inclined groove (101), and extends to the other side (W2) outward in the tire width direction proceeding from the forward side (F) in the rotation direction to the rearward side (B) in the rotation direction. The first inclined groove (101) and the second inclined groove (102) have forward side curved grooves (111), (121) located at the forward side (F) in the rotation direction, and rearward side curved grooves (112), (122) located at the rearward side (B) in the rotation direction.