Advances in tyre technology meant the Superconfort could run at even lower pressures than its Double Rivet ancestor, making for, you guessed it, a more comfortable ride. The inclusion of sipes in the tread improved wet grip significantly. There are two sizes in the Superconfort range. This 150/160x40 (Bibendum/metric) fits cars including the Citroen 10CV, Delahaye 138 and Peugeot 401.