A tire comprising a plurality of circumferential main grooves, on a tread surface, extending in the tire circumferential direction and having a groove width that prevents two side walls from contacting each other when the tire is grounded, wherein when a pair of circumferential main grooves, located closest to tread edges on each side in the tire width direction among the plurality of circumferential main grooves, are referred to as shoulder main grooves, at least one of the shoulder main grooves is a normal main groove configured such that a maximum groove width position in the groove depth direction is located only at a tread surface position, and at least one circumferential main groove other than the at least one shoulder main groove is a widened main groove configured such that at least one maximum groove width position in the groove depth direction is located on a groove bottom side than the tread surface position, characterized in that: the tire comprises a width direction groove that is connected to the shoulder main groove, which is the normal main groove; extends in the tire width direction; and opens at the tread edge, the width direction groove has a greater groove width on the tread edge side than on the side connecting to the shoulder main groove, which is the normal main groove, the width direction groove comprises a first portion of width direction groove that is connected to the shoulder main groove, and a second portion of width direction groove that is adjacent to and connected to the first portion of width direction groove at the tread edge side and opens at the tread edge, in the width direction groove, the groove width of the first portion of width direction groove, which is connected to the shoulder main groove, is at least 1 mm narrower than the groove width of the second portion of width direction groove, and the width direction groove has a length, along its extending direction, of the first portion of width direction groove that is shorter than the length, along its extending direction, of the second portion of width direction groove. when a pair of circumferential main grooves, located closest to tread edges on each side in the tire width direction among the plurality of circumferential main grooves, are referred to as shoulder main grooves, at least one of the shoulder main grooves is a normal main groove configured such that a maximum groove width position in the groove depth direction is located only at a tread surface position, and at least one circumferential main groove other than the at least one shoulder main groove is a widened main groove configured such that at least one maximum groove width position in the groove depth direction is located on a groove bottom side than the tread surface position, characterized in that: the tire comprises a width direction groove that is connected to the shoulder main groove, which is the normal main groove; extends in the tire width direction; and opens at the tread edge, the width direction groove has a greater groove width on the tread edge side than on the side connecting to the shoulder main groove, which is the normal main groove, the width direction groove comprises a first portion of width direction groove that is connected to the shoulder main groove, and a second portion of width direction groove that is adjacent to and connected to the first portion of width direction groove at the tread edge side and opens at the tread edge, in the width direction groove, the groove width of the first portion of width direction groove, which is connected to the shoulder main groove, is at least 1 mm narrower than the groove width of the second portion of width direction groove, and the width direction groove has a length, along its extending direction, of the first portion of width direction groove that is shorter than the length, along its extending direction, of the second portion of width direction groove. the tire comprises a width direction groove that is connected to the shoulder main groove, which is the normal main groove; extends in the tire width direction; and opens at the tread edge, the width direction groove has a greater groove width on the tread edge side than on the side connecting to the shoulder main groove, which is the normal main groove, the width direction groove comprises a first portion of width direction groove that is connected to the shoulder main groove, and a second portion of width direction groove that is adjacent to and connected to the first portion of width direction groove at the tread edge side and opens at the tread edge, in the width direction groove, the groove width of the first portion of width direction groove, which is connected to the shoulder main groove, is at least 1 mm narrower than the groove width of the second portion of width direction groove, and the width direction groove has a length, along its extending direction, of the first portion of width direction groove that is shorter than the length, along its extending direction, of the second portion of width direction groove.