[Chevy454]

You shouldn't have any trouble hazing the tires, so I advise AGAINST running that low of pressure in your rear tires! I would hate to see you put that thing in the ditch this early into it's restored life!

I think the general rule of thumb (on repro bias-plys) is to start around 40 and work up. Our Camaro runs 46psi on all 4 corners, but this is dependant on the car/tires...but it should get you in the neighborhood. Lay a set of black marks and make sure they are each nice and evenly dark all the way across. Adjust the pressure according to what you find.

My first year I tried lowering the rears to ~20psi...I almost took out the Christmas tree and both guardrails[img]/ubbthreads/images/icons/crazy.gif[/img]!