Pneumatic tyre and wheel assembly

In a method for the manufacture of a tyre and wheel the tyre carcass is built on a pair of annular wheel rim portions (10, 11) each having a substantially cylindrical shape at a radially outermost portion (13). With the wheel rim portions axially spaced apart components (18, 19, 20) of a tyre are applied around the wheel portions, the wheel portions are moved together to facilitate deformation of the component parts to a toroidal shape and tread and breaker components are then applied to result in an integral tyre and wheel assembly. Preferably the wheel portions (10, 11) have annular grooves (15) which provide positive safe location of the tyre beads.