I have a 2007 Vulcan Classic LT 2000 with about 3500 miles on it. About a thousand miles back the rear wheel area started making a very loud "chirping" noise (for lack of a more discriptive word). Dealer adjusted the drive belt tension and the noise went away...for a couple of hundred miles. Took it back and the dealer now thinks it may be a bad bearing in the rear axle. Anyone one else experienced this or have any input?