Most are using treaded tires. The Team Associated RTR tires and HPI X patterns are working well. I have not had the time or wanted to spend the money testing others tires. The carpet is on the low side of grip with some fuzz being pulled up from the off road buggies and trucks. I want to try the Sweep Kitty Rug tires. From what I have looked into they should work well. I would look for a rubber tire that is 30 shore or lower.