eight:
I'm pretty sure that wheelbase has nothing to do with frame flex. When I want to understand concepts I blow the factors way out of proportion. Say I want to know if a large tire or a small tire takes a pot hole better. Well then I say what if I had a 30' tire. It wouldn't even feel a pot hole. Same goes with wheel base. Say I have a 100' wheel base. The angle of the truck would be extremely low from center of the front tire to center of the rear even if my front tire was 5' off the ground. RTI scores must factor the angle from the center of the rear to the center of the front tire. They higher the angle, the better the flex. Longer wheelbase vehicles can drive further up RTI ramps. In other words, a long wheelbase truck with equivalent flex as a short one would have the same wheel center to wheel center angle as a short wheelbase rig would.