To provide a centering device, capable of lifting by operating height from a tire as placed on the lifting base to an installation member in installing a tire wheel on the installation device in a tire installing/removing machine.

In this centering device, a lifting member 17 is installed to be liftable on a stud 16 erected from a movable base 6 through a lifting means. On a lower end of the lifting member 17, the lifting base 10 for placing a tire is installed. On an upper end of the lifting member 17, an arm 18 that rotates and swings to be applied to a tire outer circumferential surface by turning and swinging is installed on an upper end of the lifting member 17.