Bob first off why wouldnt you use a radial tire if you use it for a street car ? I have had all of the 29 X 10.5 Hoosiers on my car. I would guess that our cars are about the same weight CI but I have Cal Tracs and you have a ladder bar car.The C-11 @ 13 psi will put my car on its bumper if I jack the rear shocks up and loosen the front shocks.