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@gbj_tester
As the article states, it relies entirely on the high modulus of the tyre bead fibres for security. The hooked rim uses a tyre independent approach, whereby the tyre volume has to be decreased for the bead to move radially outwards, whereas the "new" (i.e. ancient, from the time before high pressure tyres) design permits a continuous expansion of the tyre volume as the bead extends.