Method of manufacturing pneumatic tire, shaping device and pneumatic tire

A method of manufacturing a pneumatic tire including:

• forming a green case by cylindrically winding a tire component member which includes at least one layer of a carcass ply;
• shaping a green tire by expanding the green case into a toroidal shape with a supply of a fluid into the green case so that the green case adheres to a tread ring arranged radially outside the green case;
• and
• subjecting the green tire to vulcanization molding within a mold die,
• wherein the shaping of the green tire comprises supplying the fluid into the green case at an initial pressure in an initial stage, then supplying the fluid into the green case at a former stage pressure in a former stage, and then supplying the fluid into the green case at a final stage pressure in a final stage, and the fluid is supplied in accordance with a pressure profile which changes in a stepwise manner,
• wherein, during the initial stage, the green case is expanded from a non-expanded state to 8% to 10% of a full expansion amount of the green case, the full expansion amount being an expansion of the green case to an inner diameter of the tread ring from the non-extended state,
• wherein, during the former stage, the green case is expanded from 8% to 10% of the full expansion amount to 35% to 40% of the full expansion amount,
• wherein, during the final stage, the green case is expanded from 35% to 40% of the full expansion amount to the inner diameter of the tread ring,
• wherein the pressure profile is set such that the former stage pressure is set lower than the final stage pressure, and
• wherein the pressure profile is set such that the initial pressure is equal to the former stage pressure.