Bought an 08' XL1200C about 3 months ago with 10,000 mi. on it, now about 1200 miles later the rear wheel ( or at least I assume its the rear wheel ) has started "singing" or maybe a high pitch roar?? not sure how to describe the sound exactly but it starts after only a couple of miles of riding. Whadda-ya think guys, maybe a bearing, brakes, drive belt ??