Cannot remove rear rotor

you can also spray a good amount of W-4 or any kind of rust solvent where the disc sits on the hub. Let it stay for a while make sure it is soaked, make sure the car is in Neutral not in park!! What you would want to do then is hammer with a 4LBS plastic mallet from the inside out of the rotor by rotating it in three to four different positions. Repeat this process a couple of times and it will come off. Make sure there is no locking washer on the wheel bolts, if so you will have to cut them off. Trust me i just changed mine two weeks ago and it worked fine!

Depends if you want to re-use the rotors after turning them down. Once you have removed the brake caliper and the caliper mount assembly the rotor should pull off. Check to see if there are any small screws that hold to rotor to the wheel hub assembly. If so, remove them (usually with a large phillips head screwdriver. If the rotor doesn't pull right off try using a hammer and hit the rotor along the top edge to make it vibrate. Use a rubber mallet if you are trying to re-use the rotors, a metal hammer (baby sledge) if not. That should be sufficient to break the corrosion ring that formed between the rotor and the wheel hub assembly. If you still cannot remove the rotor apply some heat to the seam area between the two parts. It needs to get hot enough to smoke, but not red hot. Take away the heat and use the mallet/hammer again. The metals should be different enough that they will expand & copntract at different rates, helping to break the corrosion ring.