Chalk method for tire pressure?

[mjmarinara]

Hi y’all
Got new BFGs and don’t want them wearing out quick, I’ve heard and read some conflicting views on whether or not the chalk method is actually a viable way to find what you need to run. Thoughts opinions?

I’m running 33x12.5 15 ATs k10 about 30 psi so far. Mostly Road unless mud or snow permits but ain’t looking for trouble.

Haven’t actually done chalk yet but I live on a dirt road and when I hit the pavement the fronts clean off evenly but the backs clearly are just hitting the center, 40 miles later the first 2 inches from the inside and outside are still covered in dirt.