 Tubular tyres require more labour to repair a puncture than clincher tyres (wired–on in Britain).The tyre must be removed from the rim, opened up, patched, sewn back up, then finally glued back to the rim.Clinchers have largely replaced tubulars for amateur racing (although they have seen a revival due to the carbon rim being better suited to tubular design), but tubulars are still commonly used for indoor track racing (where the closed track makes punctures from road debris less commonplace), professional road racing, road time trials, and cyclo-cross racing.