I was riding thursday then all the sudden I heard a clunking noise coming from the engine. Got up 8:00 thing Fri on Fri and it was worse. Took it to the dealer first thing--tech rode it as he suspected the rear wheel bearing and sure enough that's was it. Now I'm "bikeless" until it comes in hopefully tues per parts dept. This sucks; it's perfect weather here in Dayton, sunny approx 80 degrees. Anyone else had this problem?