BMW K Series

While BMW motorcycles remain mostly associated with its R-series shaft-drive boxer twins, it's the K-series liquid-cooled 'multis' that have been – and remain – the German firm's most advanced, radical and downright wacky bikes of all. Launched in 1983 to propel BMW into a whole new era, the K-series has included some of the world's most innovative and interesting motorcycles. From the original li...