We are going to reinforce the bottom layer of tires by filling them with dirt, and we have a lot (probably the majority) that still have rims on them that should make it really sturdy. We're going to use T-posts to reinforce it a little bit as well.
I'm excited, it won't be pretty but it's eco-friendly, and the tires will be USED for something! We didn't have the thousands of dollars it would cost to have them disposed of, so this is awesome!
"Animals are not our whole lives, but they make our lives whole."