About a thousand miles ago I put a set of Cooper STT Pro tires on my '97 fzj80. They are size 305/70r16 and were installed on freshly powder coated factory wheels. Costco aired them up to about 50 psi, and I dropped them to around 40 first, then 36, then 32. At 32 psi only about 80% of the tread was making contact with the ground (wet tires on dry pavement). I aired them down to 30 psi and now seem to be getting contact across at least 95% of the tread on pavement. They've been at 30 psi for about the last 600 miles. I've never ran tires this low on the street, but I've also never owned a set of load range E tires. I typically air down off road, so I'm not concerned about that. I just want to make sure that the on-road tire pressure is appropriate so the tires wear evenly. FYI, the Cruiser is stock, and the truck is generally empty when I use it as my daily. I'd appreciate any advice or suggestions you guys have. Thanks!