I have a couple of jack posts, that I can put in place just for this type of thing. I'm not concerned with the beam breaking. And with the winch setup like a hoist, I'm not concerned with the weight very much...... That being said, the consensus is that the tires are over filled with Rim Guard. So, I like the idea of jacking the back of the tractor up and pulling the valve stem and letting it drain until I get air. I'll probably try and collect as much as I can, just so it doesn't make a mess in front of my shop. I'll have to see how that goes as it may not be as easy as I think to collect it. If I collect any I will use it for dust control further up the hill.
Thanks for all the advice, ideas and concerns, I really appreciate it. I probably won't get to it until this weekend or maybe next week. I will post a follow up on how it went.