The Double Rivet, Michelin's first wired-on crossply tyre design, arrived in 1925. It shares the name with the beaded-edge tyres it replaced but not the high inflation pressures and reliability issues. There are 14 sizes in the Double Rivet range. This 550/600-21 fits cars including the Bentley 4.5 Litre, Delahaye 112 and Delage DM.