I run mine at 28 PSI. Anything higher and usually the tire will wear uneven, plus they hook great around 28 - 30 PSI. At the track I bring them down to 15 and they are like glue. This is for a 315/35/17 drag radial on 10.5 Cobra R's.
With Nitto 275/40/R17 on a stock 17X8 Cobra wheel I ran around 24-26lbs on the street and track. That is running 1.7-1.8 60' times launching at 4k in a 97 Cobra with 4:10's and a few other stuff. I also got close to 12k miles out of them in that form.