I want bigger shoes for my truck and a lot of the tires I like are in 16" wheel sizes.

Anyone running 16's? Benefit over 15's?

16's clear big brakes, and usually tires are a heavier load rating. Same basic bead/seat form as a 15. Since more and better tires are becoming available in 16's I think it's a good way to go.

I run them, love them, and love having less sidewall flex. thinking about going to 17's

Go for it Brandon, besides if you the math 315x75r16 is about 1/3rd of an inch taller than a 35x12.50r15
Rich