13.5 would probably be enough at this track. I run at this track pt raceway http://www.youtube.com/watch?v=NQLuG...470BB628D0F155 and you can check out the video page. For most guys fastest needed is a 13.5. it is pretty small and on carpet. I run a 10.5 and it is plenty fast, stays cool and I even turn it down to 90% epa on futaba radio to keep in control.