I run 60-65 psi all the time in the front and 60psi in the rears unless I am towing my trailer then I will go up to 65psi. They tow great. Hardly notice any flex with the trailer attached. My BFG AT's D rated flexed way more with the trailer. Though I did get over 30k miles on the BFG's.I just put a set on my ex, so far I think they seem to have a lot of sidewall flex for a e rated tire. What is everyone running for pressure in them? I am at 55 but might try going up. Honestly im not happy so far with them. The cooper sst they replaced were d rated and I never had this issue.