Method for building tyres for vehicle wheels comprising: - moving, in a crown structure building line, M second stage forming drums for building M respective crown structures with M being an integer greater than or equal to 1, said movement being carried out along a first path from a first initial location to a first final location, for building a first part of components of the crown structure, comprising at least one belt layer, and along a second path from a second initial location to a second final location, passing through a first intermediate location and a second intermediate location, for building a second part of components of the crown structure, comprising at least the tread band; - moving, in a carcass structure building line, N first stage forming drums, for building N respective carcass structures with N being an integer greater than or equal to 1, from a third initial location to a third final location, passing through a third intermediate location; - managing the flow of said M second stage forming drums, carrying M respective crown structures being processed, entering into the second path of the crown structure building line, with the help of a first manipulator that takes care of transferring the M second stage forming drums, carrying the M respective crown structures being processed, from the second initial location to the first intermediate location of the second path of the crown structure building line; - managing the flow of said M second stage forming drums arriving into the second intermediate location, carrying the M respective crown structures, with the help of said first manipulator that takes care of: • delivering the crown structure to a first loading/unloading device associated with a shaping and assembly machine and of • bringing the respective second stage forming drum into the second final location; and characterised by - managing the flow of said N first stage forming drums arriving into the third intermediate location, carrying the N respective carcass structures, with the help of a second manipulator that takes care of: • delivering the carcass structure to a second loading/unloading device associated with said shaping and assembly machine and of • bringing the respective first stage forming drum into the third final location; wherein the first loading/unloading device and the second loading/unloading device take care of respectively associating the crown structure and the carcass structure on a shaping drum of the shaping and assembly machine that takes care of carrying out the toroidal shaping of the carcass structure assembling it to the crown structure. - moving, in a crown structure building line, M second stage forming drums for building M respective crown structures with M being an integer greater than or equal to 1, said movement being carried out along a first path from a first initial location to a first final location, for building a first part of components of the crown structure, comprising at least one belt layer, and along a second path from a second initial location to a second final location, passing through a first intermediate location and a second intermediate location, for building a second part of components of the crown structure, comprising at least the tread band; - moving, in a carcass structure building line, N first stage forming drums, for building N respective carcass structures with N being an integer greater than or equal to 1, from a third initial location to a third final location, passing through a third intermediate location; - managing the flow of said M second stage forming drums, carrying M respective crown structures being processed, entering into the second path of the crown structure building line, with the help of a first manipulator that takes care of transferring the M second stage forming drums, carrying the M respective crown structures being processed, from the second initial location to the first intermediate location of the second path of the crown structure building line; - managing the flow of said M second stage forming drums arriving into the second intermediate location, carrying the M respective crown structures, with the help of said first manipulator that takes care of: • delivering the crown structure to a first loading/unloading device associated with a shaping and assembly machine and of • bringing the respective second stage forming drum into the second final location; and characterised by • delivering the crown structure to a first loading/unloading device associated with a shaping and assembly machine and of • bringing the respective second stage forming drum into the second final location; and characterised by - managing the flow of said N first stage forming drums arriving into the third intermediate location, carrying the N respective carcass structures, with the help of a second manipulator that takes care of: • delivering the carcass structure to a second loading/unloading device associated with said shaping and assembly machine and of • bringing the respective first stage forming drum into the third final location; • delivering the carcass structure to a second loading/unloading device associated with said shaping and assembly machine and of • bringing the respective first stage forming drum into the third final location;