I have a 2010 GMC AWD SAVANA and the manual says 35 pounds for the crappy General Ameritrac passenger tires. I bought new BFG TA's in the same tire size as the OEM tires 245/70/17. They are E rated. Right now cold tire pressure is 34 pounds according to the TPMS and hot tire pressure is 39 pounds. The van is not carrying any weight or towing. The ride is fantastic by the way with these tires. I love them. They are so smooth and quiet. No vibration at any highway speeds whatsoever. WHat should I have them filled to cold for maximum life expectancy? I don't mind a stiff ride or anything I just want to run them at the best possible inflation pressure to get the longest life possible out of them. What do you run your BFG T/A's at?