The air-cooled boxer BMW twins were among the most significant motorcycles of the 1970s through the 1980s, providing an unparalleled combination of comfort, reliability, and performance. From the 5 series a complete series of sport and touring motorcycles evolved that earned a huge following, which was never emulated by other manufacturers.

One of the world's foremost motorcycle historians, Ian Falloon is the author of more than twenty books on motorcycles. These titles include the Original BMW Twins, BMW R90S, BMW Story, Ducati Story, Moto Guzzi Story, Honda Story and Veloce publications The Ducati 750 Bible, Ducati 900 Bible, Moto Guzzi Sport Bible and Laverda Twin and Triple Bible. He has a small collection of classic sporting motorcycles, including a 1976 BMW R90S. A freelance contributor to a number of motorcycle magazines around the world, Ian Falloon was born in New Zealand but currently lives in Australia with his wife Miriam, and sons Ben and Tim.