Ive had the problem since I've owned the car, and could never track it down. Everytime my car goes over a dip crack or pothole, I have a clicking sounds that comes from the brake area. The click will stop whenever I apply the brakes. I never noticed that at first, so I replaced all the springs, struts, bushings, end links, wheel bearings, etc. You can imagine how irritating it is whenever you go over a little gap in the road and you get a click...try driving on a crappy highway...Any ideas?