Abstract: An improved wheel rim expanding tooling apparatus includes an inboard wheel rim expanding tooling assembly and an outboard wheel rim expanding tooling assembly which are selectively moveable between a retracted non-working position and an extended working position. The inboard wheel rim expanding tooling assembly includes an inboard expander press, an inboard barrel head, and a pair of inboard expander press guide supports. Each of the pair of inboard expander press guide supports includes a base plate, an inboard barrel head support bracket, and a pair of runners. The base plate includes a pair of spaced apart rails, and the inboard barrel head support brackets includes a main body having a pair of spaced apart mounting legs extending therefrom. The main body defines a generally U-shaped cradle having a plurality of apertures formed therethrough which receive a fastener to thereby secure the inboard barrel head thereto. The runners are secured to the mounting legs by appropriate members.