Abstract: A tire bead breaker which can be portable comprising a base upon which a tire and wheel can be located and having a stop at one end to restrict outward movement of the wheel and tire, an arm assembly connected to the base at a spacing from the stop to permit a wheel and tire to be located therebetween which carries a breaker assembly pivotally connected thereto which assembly includes telescopic members one of which is connected to the arm and the other of which has a breaker plate at its free end the arrangement being that the breaker plate can be moved towards and located between the rim and the tire and by relative movement between the plate and the stop the breaker plate can move inwardly and a hydraulic or screw jack provided to rotate the breaker assembly about its pivot to effect separation of the tire from the rim.