+fireamx, you make some good points.

Crossfirekid setting up the car the way you like, depends on many factors, particularly how you intend on using your speed. If you looking for top end speed than wide tires will be an asset. If you want to jump the line than thinner tires to keep down rotational mass would be best. Note the differences between a drag race care and a formula 1, different agenda's different tires.