Driving impression after 3 weeks

Nope. The whole tire tread is on the ground not just the center of the tread.
Actually makes it wear more evenly. The full sidewall psi is for the tire, not the truck unloaded or loaded. Obviously if you're towing heavy you shouldn't be down at 40, but unladen, a chalk test is the physical best way to see. I'm running 48/40
I’ll be honest I came from a Chevy 2500 and the first couple of weeks I was like “wtf” with the wandering. It was bad!!! After about 2 months and 5-6000 miles the tires calmed down and now drives much better. I believe it’s the tires.