And the rural shop wasn’t really wrong either. But again it’s situational.
Example, our truck with 37s had fairly new tires when we got it but the PO was well on his way to screwing them up.
I’ve been adjusting pressures and rotating as needed to the position needed even including flipping them on the rims now, to increase tire life.
Result, 40k miles ago, there was 3-4/32 difference between tires. And tread cupping on the front. Now, tires are almost equally and perfectly worn and still have 9-10/32 left center tread
This would have not been the case if I just blindly rotated in some pattern and used “recommended” pressures. At $2000 a set now (FJB) it’s worth understanding tires, imo.