Pneumatic tire, and method for manufacturing same

A method for manufacturing a pneumatic tire comprising a carcass comprising a carcass ply extending from a tread portion through a sidewall portion to a bead core of a bead portion, wherein

• by use of rigid inner mold provided on an outer surface with the tire forming surface forming a cavity surface of the pneumatic tire, the method comprises a green tire forming process to form a raw cover by adhering sequentially unvulcanized tire component members including the bead core and the carcass ply on the tire forming surface;
• the green tire forming process comprises
• a first core pieces process to form an axially inner core piece on said tire forming surface by spirally winding and adhering a rubber lining bead wire covered with unvulcanized rubber from the radially inward to radially outward in an overlapping manner in the shape of spiral,
• a carcass forming process to have a step of adhering the radially inner end part of the carcass ply on the axially outside of said axially inner core piece, and
• a second core pieces process to form an axially outer core piece on the axially outside of the radially inner end part of said carcass ply by spirally winding and adhering said rubber lining bead wire from the radially inward to radially outward in an overlapping manner in the shape of spiral;
• and
• said bead wire comprises a core part made of not less than two core strands twisted together and a sheath part made of not less than three sheath strands twisted together around said core part;
• said core strands and/or sheath strands include an embossed strand that is embossed in a wave shape before twisting;
• and
• the twisting direction and twisting pitch Pc of said core strand are the same as the twisting direction and twisting pitch Ps of the sheath strands.