From the early 1920s until the mid 1960s the Rudge-Whitworth design wire wheels were the standard for almost all race cars. Ferrari chose them for the street and race cars and used them as standard equipment or an option through the Daytona series in the early 1970s. The Rudge-Whitworth design wheels were made in Milan as Carlo Borrani wheels until 1961 and as Ruote Borrani after that. They were made with splined hubs and were attached with a central locking nut with two ears and later three ears. These wheel nuts or knock-offs were designed to be removed using a lead hammer. Several different designs were used throughout the years. 275/330 Type.