A tire dismantling method is provided that is capable of dismantling a thermoplastic resin material from a tire in which the thermoplastic resin material and a rubber layer have been integrated together. A dismantling method is provided for a tire including a tire frame member formed of a thermoplastic resin and a rubber layer that is vulcanization bonded to an outer face of the tire frame member. The tire dismantling method includes an opening-out process of cutting the tire along a width direction to make the tire into a belt shape, and a slicing process of slicing the belt shaped tire along an interface of the rubber layer with the tire frame member.