I used to run them at 32 PSI on the street - they're 315 DR's on a 10.5" wheel. They wore in the center a good bit more than they did on the edges, so on this most recent set I've been running 28 PSI - and the wear seems to be perfect.
I have been using Nitto DR for the past 4 years, for street and strip in both 17" and 18" sizes. I run 25-26 psi on the street and 19psi on the drag strip. I even used them on the road coarse and they worked very well. 35 psi for that.