Is it a Supersport? Is it a sport-tourer? Is it fast? Yes, yes and yes. After a nearly 300-mile blitzkrieg comprised of incomprehensible intersections, toad-choking rain, snot-slick pavement, apoplectic manure trucks, outraged pedestrians, suicidal chickens and grandiose British journalists, I'll say this much: BMW's most convincing sportbike is a BMW above all else. That means benevolent ergonomics, shaft drive, antilock brakes and more. With the tach hovering a smidge to the right of 11,000 rpm, it inhales an indicated 272 kilometers of autobahn per hourthat's 169 mph to you. That's not quite enough to rattle the 'Busa boys, but when you're closing in on Aunt Greta, who's tapped out at 85 mph in a 55-horse Renault Twingo, it's plenty fast.