Abstract: An apparatus for cutting tires is disclosed that employs: a base on which there is disposed two upstanding shafts (one rotatable), and first and second plates to sandwich therebetween the tire casing. Both plates have upstanding teeth members, an off-center hole and a center hole. The rotatable shaft is disposed in the center hole of both plates and the other shaft is disposed in the off-center hole of the first plate. On the same side of the first plate on which the upstanding teeth means are disposed, there is affixed an upstanding member which is received in the off-center hole of the second plate. A cutter bar is provided that has a cutting means and a rotatable handle on one terminal portion. The cutting bar also has a handle and it contains an elongated rectangular shaped slot. The terminal portion of the rotatable shaft is rectalinear in cross section and is disposed in the cutter bar slot so that upon rotation of the shaft, the cutter bar also rotates.