PK, I agree. When I saw the 80 psi on the side of the tire, I inflated to 70 and did the chalk test. Lots of chalk left on the outside, like it was inflated like a donut. A heavier vehicle might flatten it out on the ground, but not a VX. Chalk wear was consistent front and back, is the VX close to 50-50 weight distro?

Bottom line, I'm at 60 psi, due to reading the chalk, 7s all around on the Rancho. I'll ride that this week. Thanks for the suggestions.