Ok tire folks, here's my dilemma: I have a 2014 F150 FX4, and stock tires are P275/65R18 114. I need 4 new tires, since I tow close to my max a few times a year, I want to up the load index from 114 to 116 on my next set of tires. 114 is the most popular in that size, but I can find 116's and even 123's if I go all terrain. My problem is the pressures. Once you go from 114 the max sidewall pressure goes from 35psi (where my sticker says to run) up to 44psi max. So, the question is do I up the load index and run at the max sidewall to take advantage of the higher load rating, or do I get the 116, but run them at 35psi in accordance with the sticker? The jump from 114 to 116 gives me an additional 600 lbs max load on the tires (across all 4), which isn't a huge deal, but it's basically the difference between a full tank of water and an empty tank of water on the TT. Thoughts?