I have an s80 T-6 with 80k miles. I just changed the rear pads. The rotors were fine so I did not turn 'em or replace them. I have bled the system numerous times but the brakes are dragging. It does not occur when I first start the car and drive it. Only after about 10 minutes of driving does this occur. Once I shut it down and restart it the same thing happens. Is this just a stuck caliper or is it something else? I do not have any leakage at any of the calipers. Thanks in advance.

Probably dirty caliper pins that need new brake grease. As the friction heats up the rotor, the metal expands and will start to drag and make things worse.

When I clean the slide pins, I wind up using a wire brush to get all of the black dirt off. Then I use a small amount of silicone brake grease and reinsert the slide.

Klaus
--
Common sense trumps a PhD

Thanks Klaus. That makes sense and is a cheap solution. I will pull the pins and redo. I did grease 'em up last time and I know I put a lot on. Maybe too much. When I pulled them out I did wipe them down but I did not polish 'em with scotch brite or anything.