This has probably been asked before but because we are leaving in the AM for the summer I need quick advise from the folks on here. We have a 2013 Ford F350 SRW 6.7L Diesel and a new to us 2016 Key...
Without knowing what your weight is, I would go for 80 psi. There are inflation pressure tables, and you can go from there, but 80 psi is a good place to start.