BMW F650

BMW’s original Funduro, soon to celebrate its quarter-century, is one of the firm’s most successful models. Some 50,000 of the original four-valve dual-plug five-speed 650 singles were built in partnership with Rotax and Aprilia in the mid-1990s, before BMW brought production in-house in 2000. Ian Caswell initially thought he’d found a brilliant bargain in the form of his 1994 F650…