WHAT IS UP WITH THAT FREAKIN' NOISE!!??!! ... Here's the story: Last week my car started making this weird lil' noise that wasn't a problem at first... it was a lil' rubbing noise when the car was rolling... all of a sudden the damn thing broke into a serious metal grinding rubbing noise!! It comes from the rear (passenger side) wheel... and it gets worse when I hit the brakes! When I examined it... I had metal dust (tiny lil' metal chips) all over the wheel!! I figured that the pad was probably out abd maybe it was chewing the crap out of my rotor... I ordered two Brembo rear discs and a set of four pads (front/rear) from NOPI... prices were fair enough. What I need to know is this: How come ONLY one wheel had that problem?? What could've caused just one pad to wear?? Could it be the Caliper that's worn?? HELP!!