TIRE VULCANIZING MOLD AND TIRE MANUFACTURING METHOD

A tire vulcanizing mold (1) for molding an unvulcanized tire (T) into a pneumatic tire (T1) having a bead part (30) with a bead heel part (32) is provided with a side part ring (200) for molding at least the bead part (30). A circumferential groove part (500) extending in the tire circumferential direction is formed on a tire molding surface of the side part ring (200) in a heel molding region for molding the bead heel part (32), the side part ring (200) is divided into a side ring (210) and a bead ring (220) that abuts against the side ring (210), the division position of the tire molding surface of the side ring (210) and the tire molding surface of the bead ring (220) is located in the groove bottom (501) of the circumferential groove part (500), and the cross-sectional shape of the circumferential groove part (500) tapers toward the groove bottom.