I have sometimes a grinding noise at low speeds and a little squealing too on my passenger rear brake area. It sometimes gets worse when I press on the brake lightly and it does make this noise without the brakes being engaged on my part.

 

how low is "low speeds"...and it might just be brake dust or some crude or a hard spot on the pad....how many miles do ya have on your brakes and what kind of setup?

 

under 25. 15k or less on brakes. theyre gooood pads.

 

I'm having this problem on my 09 ss/tc sadan my pars are good but when I break it grinds and on the insid of the roto thief is a massive guage so I'm going to take it in I think the caliper failed same thing happens to my g5

 

This is a very common problem. Happened to me and many others. New rotors and pads fixed it as well as lubing the slide pins.

 

i dont see how my rear would go before the front. brakes are more applied to the front on cars now, way more.