A tire (10, 50) comprising: a ring shaped tire frame member that is made of a resin with a plurality of tire pieces, the plurality of tire pieces, which are adjacent with each other in a tire axial direction, being joined along a tire circumferential direction, the tire frame member including a pair of bead portions, a pair of side portions that extend from the pair of bead portions toward the tire radial direction outside and that are disposed around the tire circumferential direction, and a crown portion that couples the pair of side portions together; a joint portion reinforcing belt (18, 52) that is adhered to the tire frame member, that extends around the tire circumferential direction, and that covers a joint portion of the tire pieces; and a tread layer that is provided at a tire radial direction outside of the tire frame member and the joint portion reinforcing belt (18, 52), wherein facing end faces of the plurality of tire pieces are joined together by a joint member made of resin, wherein the tire frame member includes side reinforcing members that are embedded in the side portions at intervals around the tire circumferential direction so as to intersect the tire circumferential direction on progression from the bead portions toward the crown portion, characterized by the side reinforcing members extending as far as the tire axial direction center portion of the tire frame member, such that the side reinforcing members each have an end portion which is positioned at the tire axial direction center portion, and when the joint portion reinforcing belt (18, 52) is projected along the tire radial direction, both width direction end portions of the joint portion reinforcing belt (18, 52) overlap the side reinforcing members, and a gap exists between the end portions of the side reinforcing members in the tire axial direction, and the joint member is arranged at the gap. a ring shaped tire frame member that is made of a resin with a plurality of tire pieces, the plurality of tire pieces, which are adjacent with each other in a tire axial direction, being joined along a tire circumferential direction, the tire frame member including a pair of bead portions, a pair of side portions that extend from the pair of bead portions toward the tire radial direction outside and that are disposed around the tire circumferential direction, and a crown portion that couples the pair of side portions together; a joint portion reinforcing belt (18, 52) that is adhered to the tire frame member, that extends around the tire circumferential direction, and that covers a joint portion of the tire pieces; and a tread layer that is provided at a tire radial direction outside of the tire frame member and the joint portion reinforcing belt (18, 52), wherein facing end faces of the plurality of tire pieces are joined together by a joint member made of resin, wherein the tire frame member includes side reinforcing members that are embedded in the side portions at intervals around the tire circumferential direction so as to intersect the tire circumferential direction on progression from the bead portions toward the crown portion, characterized by the side reinforcing members extending as far as the tire axial direction center portion of the tire frame member, such that the side reinforcing members each have an end portion which is positioned at the tire axial direction center portion, and when the joint portion reinforcing belt (18, 52) is projected along the tire radial direction, both width direction end portions of the joint portion reinforcing belt (18, 52) overlap the side reinforcing members, and a gap exists between the end portions of the side reinforcing members in the tire axial direction, and the joint member is arranged at the gap.