Slick reading
There is now magic ## here. it all depends on how much weight is on the rear slicks, how hard your suspension hits the tire and and how much Hp/torque it at the wheel.
now that i have said that. i would start at 20 pounds and do a burn out. if its mostly in the center, then you need to take some air out of it. and you probably will. when you get a SOME WHAT even pattern, then you need to forget about the foot print, and find out what air pressure you car likes from there.
Once you find the proper air pressure, even if it not giving you the best foot print, it will as you ware them in.
I don't have a lot of experience with making a slick hook, so maybe other will have a better advice.
I don't thing looking at you tires after its back at the trailer will give you much info.......except if a belt is showing or something like that.:burnout: