[Ed.bbfec86]

I am wondering if anyone has any insight into what may be happening here. I am running track pads (gloc r12 in front and r8 in the rear) on oem sliding calipers. They are fine on the track, but when I'm driving on the street the brakes squeak constantly, even when Im not pressing the brake pedal. Accelerating, coasting, driving slow, driving fast on the highway, they be squeaking. They make a rhythmic pulsing squeak that increases and decreases frequency with the speed of the car. I've been driving it like this for over a year and just put up with it, but lately its been really annoying me and and ruining my enjoyment of the car on the street.

I am wondering if anyone else has had this constant squeaking problem with track pads, and how to prevent it other than swapping back and forth from track to street pads.

I assume this is caused by the pads dragging somehow. I checked all caliper slide pins and everything is nice and smooth. I initially thought this was caused by the front calipers not releasing, so I swapped the street pads back into the fronts to see what happened. This quieted the squeaking somewhat, but it was still pretty bad coming from the rears. So I don't think the front caliper theory was correct.
At the same time I also happened to have put new rotors on the rear which gave me some insight into how the pads are contacting the rotor. After driving for a bit, I saw pad wear appear only on the center half of the swept surface on the outer face of the rotor, and nice even pad wear on the inside face of the rotor. This is the same on both left and right side. See attached picture. Based on this wear pattern, I figured that the pads must be worn at an angle, and thats whats causing them to constantly drag on the rotor.

Is there any way to avoid this and stop the constant squeaking while driving with track pads? Do I need to replace the calipers? or switch to a different track pad? I feel like there had to be a solution because all of my 86 track friends say they've never had this issue.

Any help is much appreciated! Thank you!

Ed