i noticed the other day that there was a faint squealing sound coming from the back of the drivers side.at first i thought i was just in the morning and surface rust but i hit the brakes hard at the stop sighn and then it was still doing it after that. on the way home from work the other day i noticed it again. seems to only do it when i'm up around 30mph. just one of those things that really gets on your nerves.