mob said:you can fit 26x10.5 on a 15x9, go for it! Do you have the wheels already? Im not sure if weld makes 15x9 draglites. Unless you have the wheels, id get 15x8, 5.5 backspacing, and 26x10.5 tire. I run 26x11.5x15 on my 15x10 pacer draglites, the tire actually measures out to be about 10" on the rim.