Seems silly I can't figure out how to get the back tires off. However, after removing all 5 lug nuts, both back tires won't budge an inch, much less come close to coming of the lug bolts. Is ther another piece that needs removed (other than the lug nuts) that will allow the back wheels to come off? Maybe I need a larger sledge hammer...........

 

Probably just stuck to the rotors, get a bigger sledge like u said

 

I had to pound on the tirewall with a rubber malet several times, tire came out eventually.

 

Its stinks when you think your going to do something simple and winds up beinga big project.
Glad you got it

 

Can happen on any car. Back off the lug nuts a few turns. Lower the car off the jack, back up a few feet, move forward again. The weight of the car will almost always break the tire loose. That's why you leave the nuts on, so the tire can't come off.

Use a wire brush on the rotor, and the center hole of the wheel to smooth it a bit. I like to put a little grease on the inside of the hole, and a bit on each of the lugs. Keeps the rust from getting things stuck.