These are a few uses for giant tire sidewalls from mining tires. Our sidewalls are generally from 4'-6' in diameter and weigh 200-400 pounds each, although we have bigger ones, too. The "bead hole" in the middle ranges from 25"-49", with some bigger.They are incredibly durable. The sun won't dry-rot them, at least for a couple hundred years.
If one of the uses listed above gets your attention, or if you have another idea, we would love to repurpose them. Come pick a few up to experiment. We can deliver as well. Just give us a call at 800-365-5850.