A stud pin (30) arranged in a hole (24) in a tread portion of the pneumatic tire (1), includes: a first flange portion (31) having a first surface that faces the bottom surface of the hole and a second surface that faces in the opposite direction to the first surface; a body (34) connected to the second surface of the first flange portion, and that is arranged in the hole; a tip (35) supported by the body, and that projects to the outer side from the ground contact surface of the tread portion; and a through hole (40) that connects a first opening provided in the first surface and a second opening.
展开▼
