One mondo big tire
One 10 pound sledgehammer
One truck tire, pull harness and cable
One 200 pound tire to flip
Everything hinges on the tire puller. He drags the tire 50 yards to the mailbox (or other suitable marker) while the three others are beating the big tire with the sledgehammer, jumping onto the same tire the other guy is beating or flipping the tire. When the tire puller gets to the mailbox he runs back and replaces whoever is on the sledgehammer, and that person moves to the tire jump, and that person moves to the tire flip, and that person runs down and gets the tire and brings it back to the start. The rotation continues until the flipping tire has made it down to the mail box and back.