I have BFG's on mine...I know its not the same entirely...I have an 8.5" rim and I tried all the way down to 17lbs and I was still not hooking ...so I did what they say not to, I went to 14psi and it hooked hard for me at a 6500 launch...

on the street I inflate at 28psi and hook on the street...Cal-Tracs work good...