Drag Radial Tire Pressure

I'm looking forward to taking these Nitto 555's out. I feel I'm going to suffer from the problem in post 8 and not have a wide enough rim at 7 in. They say they want at least seven and a half, but I'm really building this for Street play. But I will take it to the track and give it a shot. I had no intentions of running it any more than 17 or 18 lb at the track though..
I used to run 11 or 12 lb in my Hoosier slicks...