Ruote Borrani S.p.A. (established 1922 in Milan) is an Italian manufacturer of automobile and motorcycle wheels. They are known for supplying Rudge-Whitworth design centerlocking wire wheels to many Italian racing cars, sports cars and luxury cars.
History
The company was initially named Rudge-Whitworth Milano, as the splined centerlock hub mechanism was licensed from the Coventry-based Rudge-Whitworth, which had developed the patents since 1908. It was run by Carlo Borrani at Via Ugo Bassi 9, and quickly became supplier for Alfa Romeo, Bianchi, Lancia and other racing cars, used by such drivers as Enzo Ferrari when winning the first Coppa Acerbo in Pescara (1924). Borrani wheels used aluminum alloy rims instead of steel, improving unsprung mass and thus overall performance compared to the original Rudge-Whitworth design.[1][2]