To provide the manufacturing method of a toroidal carcass for a road vehicle tire, with which the woven carcass is easily and quickly manufactured, and its device.

In this manufacturing method of a toroidal carcass for a road vehicle tire and its device, in order to manufacture the toroidal carcass, a toroidal frame 7 defined by two annular beads 2 and by a removable outer ring 8 divided into peripheral sectors 9, a winding divice 15 for feeding a spool 16, in which acord 5 is housed, about and through the frame 7 to the last 10b of the peripheral sectors 9 and an operating device for moving a first peripheral sector 9a together with the last peripheral sector 10b to an operating position, at which an opening 28 for passing the spool 16 is defined, are employed.