Because the inside tire has a smaller diameter circle to travel while going through a curve, it is imperative that you get the tire stagger set correctly. Having the incorrect stagger will make for an ill-handling race car. If your car is tight in the middle and coming off the curve, then an increase in stagger is needed. If its loose from the middle out, reducing the stagger will help. Minimal stagger adjustments can be made by adjusting air pressure, but anything over a quarter-inch requires changing the tire size.