When I take my foot off the gas or stop at a light there is a klunk and it sounds like it is coming from the right rear wheel or axel. Also when I jacked up the right rear tire off the ground with the car in park, I can rotate the wheel about a quarter of an inch and there is a distinctive clunk coming from the wheel/rotor area. I checked the caliper bolts and they are tight. Any body have any thoughts on this?