I have tried the small tire Nitrous heads up deal .Cost way more than I can afford.Lots of fun and One crazy ride . The car is fast but does not go rounds in a bracket. I am building a faster light weight N/A big tire car. Guess what . the N/A car is a lot easier and cheaper to build and run. Not knocking either, but for me Brackets are in the future and the light big tire car is it. Now for a wild ride a couple of times a year I will go with the Nitrous car.