Brake Job fail - Right rear rotor hot/dragging

[cwildman]

I just did a complete brake job on my 2004 X5 3.0. I followed the excellent instructions by hayaku at: http://www.xoutpost.com/articles/x5/...e-job-diy.html

I installed new Raybestos pads and rotors on all 4 tires and new sensors.

While installing the rear rotors we did notice that the parking brake seemed to be rubbing against the inner drum of the rotor as it didn't slip right on. It required some pushing to get it all the way on. My more experienced partner suggested that some parking brakes have automatic adjusters when you reverse, so the parking brake may back off some then.

I drove the car a little after the job was done and didn't notice anything unusual, then it sat for a day. Today I got on the freeway and was feeling some vibrations, I wasn't sure if they were the road or not. After getting out of the car I smelled a brake burning smell which I expect is usual. I visually inspected all 4 rotors and noticed the right rear rotor had a scorched purple look to it. Attached is a picture showing the coloring, notice it is not on the pad surface but the outer drum.

At this point I drove the car immediately home on side streets. I could now feel very strong vibration/dragging when driving 20mph. This caused be to stop a few times to make sure it wasn't getting worse. Interestingly the problem seemed to go away at low speeds after driving for some time. I also tried backing up an entire block.

My assumption is at this point that the parking brake is dragging on the rotor, it did seem that the parking brake pads needed to compress when I removed the rotor again just now. As well there seems to be a lot of shavings around the entire assembly from the brake rubbing the inside of the rotor.

1. My plan is to follow the instructions on adjusting the parking brake, do you guys agree?

2. Does it make sense that only the right rear would be grabbing more than the left rear?

3. Is this rotor still usable or is that dangerous?

4. Do my parking brake pads look thick enough or is the pad so worn off that it is rubbing metal on metal?

Thanks for your help.