[Keith Wagner]

Stuck wheels are super common, especially with steel wheels. I either kick or hammer them off from the back with a dead blow mallet. If that doesn't work a big pry bar from the lower inside always works but you have to have room to pop it off like that. It's corrosion, not wheel tightness that causes the problem.

To combat this, I use some brake caliper grease around the hub. Always put it on both sides of the brake rotors as well.
Never have any problems removing wheels or rotors.
Also use a little on the lugs to keep corrosion to a minimum there too.