Abstract: A shear mechanism for cutting worn out vehicle tires into arcuate segments to facilitate storage and transportation. First and second vertically extending anvil members are mounted on a base in parallel, spaced-apart relationship to one another. The anvil members include removable female die members. Pivotally joined to the base is a blade member, the blade member also having a replaceable working edge. The blade is driven by a hydraulic ram and when a tire is positioned against the anvil and the ram is actuated, the blade will move into the gap between the spaced-apart anvil members and, in doing so, will sever through the side walls and tread surface of the vehicle tire.