Those door jam numbers aren't just picked from the air. A lot of testing went into picking what works best. The tire itself only supports about 50 lbs. The other 1500 is supported by the air. Look at the revolutions per mile on the tire charts, at 60 mph your tire is flexing that many times per min. for hours on end. That's why they get hot. Having the wrong pressure does more than waste gas. It's very hard on tires.
2007 V-10 Reed Green Air Supp. Tow Pkg. Four Zone Winter Pkg. Lock Diff. Llumar tint Mud Flaps Euro Bin and Headlight switch Sirius Radio Seat covers
Like nickm said, go with the recommended air pressure listed inside you door. We run our WR SUV's at 50 ft and rr but we tow a 7000 lb trailer often. Better more than less, but the vehicle will ride a bit more harshly with more air. I can not remember the last time we had vehicle in the shop with high air pressure wear. NEVER exceede the maximum air pressure on the side of the tire as measured when the tire is 65 degrees F.