Sorex is the tire of choice at my local track in Scottsdale. I am only running the kit Schumacher tires until next week. I forget the exact tire they say to run. After buying a new Aritronics 94357, a good Sanyo 3000hv pack and a new body with painting supplies I ran short on cash for extra tred. Several were surprised at how well the car did handled with the kit tires as was I. As I worked the infield I could actually see and here the tires hop and skip as the car sliced through the twisty’s. Cool! The track is also going to be resealed next week with more grip promised. I may have to loosen up the car a bit.