Yeah, them too. But they like to keep it a secret. Thats why you don't see any buggies running T-Birds, they don't want to unleash the fury by strapping on T-birds. They are going to wait until the finals and have everyone else losing while they win with the superior tires.
ohh i was really confused cuz everyone is using these really hard tires i think they're bfg krawlers and i beleive theyre made with plastic in the rubber