I can't seem to quiet the Rear Sport Brakes on my 11'S.

I've tried: new pads, rotors, and cleaning/lubing all pins and shims and nothing seems to work.

Has anyone had any luck with this?

 

Mine squeal when it is cold. But I see you are in SoCal, so cold is not the issue. I wish I could be of help

 

Did you put on new hardware(the metal brackets) I had this issue and was super annoyed so got new pads and rotors and put the new hardware and now it hasn't made noise. My brackets were really dirty as well so that probably was it.

 

Try anti-drag clips?