Thanks for the info. I am currently running 60psi front and 65psi rear as the door jam indicates. 65 psi in an E rated tire most likely will ride harder than a D rated tire with the same pressure. Which is why I would like to replace the tires with the same ones that came with the coach. I'm not too concerned with the brand name as I will reach the 5-7 year limit and still have 80% tread left. Anyone running the BF Goodrich Commercial TA? Sam's advertises the D range on their site but BF's site only shows the E range.