Ok so this isn't your average brake squeak. It only happens when my foot in NOT on the brake. As soon as I apply a tiny bit of pressure the squeak goes away and as soon as i let go its back. I took apart the calipers and greased the back of the pads and it STOPED the sound for about 2 days. Now its back. My pads look good and so do the rotors. Will post up a sound clip tonight! It makes a squeaky sound when i go over speed bumps or any bumps of that matter. Super annoying. What should i do? New rotors and pads? And the sound only comes from the rear

 

Mine was doing that a few weeks ago and I changed my brake pads and now it's all better.. You also might have a rock stuck between the rotor and shroud

 

bent axle flange?
http://www.youtube.com/watch?v=vame1AE7eOg

 

CRC Disc Brake Quiet

^This solved it for me. Same symptoms as you mentioned; apply this crap to the back side of the brake pads and reduces any play in pad/caliper.

 

Oh my god i love you how do i check this?

 

When I was diagnosing mine I chocked the front wheels and put the rear end up on jack stands. Remove the rear wheels and start it up and put it in gear.

 

Well another question would be how to i fix this

 

New rear axleshaft.. Good time to upgrade !!

 

:( oh well, it was gona need to be done sport or later. Which brand do you guys recomend?
Nothing outrageously expensive though.

 

10Factory, Alloy USA, G2 all make chromoly replacements for barely more than replacing with the weak ass stock axles.