2001 S55, new brakes from dealer $60, new disc rotors. Still one side is making a squeak! Driving me nuts. Is it possible these were the cheap ones at the dealer? Do they usually have different brands, grades? Some cheaper than others? Do these brakes usually have shims? My cousin ordered me this first pair and I saw them when he put them on. He probably ordered me the cheapest. I mean there is much worse noise before from the rotors and brakes, because the rotors were edgy and "liny". But one thing: We first changed the brakes, and then after I found out the noise is still there, we changed the rotors, so I am thinking maybe because we did that the noise will be there for good? I also used the de-squeak stuff on both sides and that worked for like a day and then it came back. But that noise is loud, if it wasn't I would have put up with it.