I'd would adjust for the amount of extra weight, if any, loaded in the Jeep. I'm running 35 psi in my 37's. If I have the back packed for a trip I'll bump them up to 38-40 depending on how much 💩 my wife "needs" to bring.I just bought a 2015 Wrangler Sport - 2 door, a few months ago.
I have Mickey Thompson Baja STZ 315/70R17 tires with 38psi and it was a rough ride. Tonight I lowered all 4 tires to 34psi but after reading all the posts it seems like this is still way to high. I haven’t done a chaulk test yet but will try it this weekend.
Currently I do all city driving but next month I’m taking a 195 mile highway trip to the Florida Keys. Do I adjust the psi for city and highway?