Remove a wheel, grab the brake disc (make sure it's cool first), and try to rotate it one way or the other. Unless it's rusted to the hub, you'll notice a bit of play when you change direction. That is probably what you are hearing. Also make certain the hub caps (if equipped) are tight, if they are loose they may wiggle a bit and the plastic clips on them may cause the noise. Neither situations here would be dangerous.
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Wednesday, June 30th, 2010 AT 8:36 PM