OK,,, here is my life long experience with tire inflation.. I run 36 lbs. And have been for nearly 30 years on all kinds of autos. I have goodyear wranglers on my Liberty CRD, the original tires lasted 52,000 miles. I had, Goodyear MTAs on my Rubicon. they would have gone 60,000 miles, but I upped the ante for our Moab trip back in 10', and bought some BFG MTAs 255/85/16s, and used the original 245/75/16s for the trailer. I now have 23,000 miles on the BFGs. and should easily get 45 to 50 thousand miles out of them. I haven't had a flat tire in nearly 25 years. Low pressure at highway speeds means that the tire is flexing, a lot more than necessary, causing them to heat up. When they heat up, the compounds break down, causing premature tire, wear, and catastrophic failure. In order to run 36psi you must have the proper rim/tire width, or your tires will ballon, causing premature wear. Auto companies always give you lower numbers, as we are plagued with demanding that big American smooth ride. The BFGs that I run have a maximum psi of 65 lbs. most stock passenger tires around 44 lbs. Here is a shot of of my BFGs, with 23,000 miles of wear on them..