The invention discloses a tyre structure. The tyre structure comprises an inner tube main body, a
grinding layer is arranged in the inner tube main body, the
tail ends of the two sides of the
grinding layer form bead parts correspondingly, steel wires are arranged in the bead parts, both the inner surface and the outer surface of the
grinding layer are combined with thread
layers, the inner tube main body are provided with the two thread
layers which are in contact with the ground, and the thread
layers are switched to use through an tyre overturning mode. According to the tyre structure, two thread layer structures are designed in the inner tube main body and used by a vehicle, the two thread layers can be adjusted and replaced according to needs, when the vehicle runs on a zigzag road, a cross-country type thread layer with a higher
friction coefficient can be replaced and used, meanwhile, and a high-speed type thread layer with a lower
friction coefficient can be replaced and used in an
urban area or an expressway section, so that the functionality of a traditional tyre is improved.