Abstract: A guide tool to assist in mounting and dismounting an automobile wheel on the hub mounting studs therefor includes an elongated hollow tubular body internally threaded at the ends thereof with different diameter threads for threaded engagement with either of two different size wheel studs. The outer surface of the body is cylindrical and dimensioned to be received through the stud holes of the wheel for guiding the wheel onto and off of the studs without sliding engagement between the wheel and the stud threads. Diametrically opposed recesses in the outer surface of the body intermediate the ends thereof provide a seat for an end wrench or the like to facilitate mounting the guide tool on or removing it from a wheel stud.