Abstract: A tire building machine in which a tire building drum of variable diameter is connected to a rotatable driving shaft for rotation therewith while a plurality of bead applying means respectively arranged at opposite end faces includes annular sections surrounding the rotatable shaft in radially spaced relationship thereto. The machine furthermore comprises guiding means separate from the rotatable driving shaft and slidably engaged by the bead applying means which are adjustable on the guiding means in planes perpendicular to the driving shaft in two directions perpendicular to each other.