Method of manufacturing support body for pneumatic run flat tire

A manufacturing method of a support body for a pneumatic run-flat tire including a support portion disposed inside a pneumatic tire and bearing a load when run-flat driving and leg portions provided at both sides in the direction of the tire width of the support portion and abutting against a rim, comprising:

• a center portion forming process of forming a tire width direction center portion of said support portion;
• an outside portion forming process of forming tire width direction outside portions of said support portion as separate bodies from said tire width direction center portion;
• a leg portion forming process of forming the leg portions comprising elastomer integrally to the rim side end portions of said tire width direction outside portions;
• and
• a coupling process of coupling said tire width direction outside portions formed with said leg portion to both sides of said tire width direction center portion.