A tire demounting tool for demounting a second bead of a tire from a deep-dish wheel rim having a flange includes a handle that extends along a longitudinal axis. Extending from the handle is an extension section that extends radially away from the longitudinal axis at an oblique angle. Attached to the extension section is a curved pivot from which a wedge extends therefrom. The wedge is inserted between the second bead of the tire and the flange of the wheel rim, such that the pivot rests upon a sidewall of the tire, while the handle of the demounting tool extends back across the wheel rim. Thus, one individual is able to anchor the tire while applying a force to the handle of the demounting tool to lift the wedge to demount the second bead of the tire from the deep-dish wheel rim.