through the chamber 1 with an impressed matrix 9 after vulcanization the matrix 9 creates the chamber 1 with the extended surfaces of the chamber 1 walls the broken arrows on fig6 b represent application of pressure on the wall of the chamber 1 roughly in parallel with the extended surfaces of the chamber 1 wall and the withdrawing the chamber 1 walls from the matrix 9 a part of the matrix 3 contracts there is only a minimum contact between the walls of the matrix s and chamber 1 and the matrix 9 can be extracted from the chamber 1 lengthwise fig6 shows the chamber 1 after extraction of the matrix 9 and before fitting between the tire 4 and rim 7 fig6 d shows the chamber 1 after being fitted between the unloaded tire 4 and rim 7 the surfaces 10 of the chamber 1 walls will fit tight on each other and make a zero angle between each other fig6 e shows the chamber 1 at the point loaded by deformation of the tire 4 all the walls of the chamber 1 fit together and make a zero cross section area of the chamber 1 at this point the tire 4 ancillary structure 6 rim 7 and support 15 or hubcap all can include formed parts and components of the chamber 1 for example a part of the chamber 1 deformable to a zero cross section area of the chamber.