Outdoor tires at RCHR depends on where we are in the season. Early on, the track is loamier and cooler, so Goosebumps, Bow Ties, etc. (moderate pin depth) tires are good. For most of the summer, Holeshots, Tazers, etc. (shallow to moderate depth) work just fine. When it is warm out and the track is well packed, Flip Outs grip like sh*t on a blanket.