Pork Soda, first, I want to hear the story behind your handle. Second, I just moved from the Original Equipment P275/60-18 Bridgestone Dueler H/T's to LT275/70-18 BFG AT KO's and have been playing around with pressures myself. 40 psi felt good, but I was concerned that with a rated maximum pressure of 80 psi, 40 psi would actually be underinflated. I bumped the pressure up today to 50 psi and drove around a bit. The steering felt noticeably lighter and less precise. Earlier tonight, I found the thread below and followed the instructions at the Toyo Tires link. The math says I should be between 40 and 45 psi. In the morning, I'll be dropping down to 45 psi and see how that feels/drives.
Correct Tire Pressure
Good luck!