A tire formed of a plurality of inflatable and removable pneumatic sectors (S) which are circumferentially adjacent to each other when mounted on an appropriate rim (J) with circularly continuous base, the tire characterized by the fact that each sector (S) comprises a tread (2) connected to four sidewalls (40, 50), two of these sidewalls (50) being circumferentially adjacent to the sidewalls (50) of the adjacent sectors (S) and the other two (40) forming the sidewalls of the tire, these sidewalls (40, 50) terminating in meridian beads not in contact with the mounting rim (J) and reinforced by meridian bead wires (11) and in circumferential beads assuring the mounting of the sectors (S) on the rim (J) and reinforced by circumferential bead wires (10) connected to the meridian bead wires (11) and to which at least one reinforcing armoring (4) of non-stretchable cords or cables is anchored, said reinforcing armoring (4) being radially adjacent to at least one tread (2) reinforcement armoring (8).