Very interesting discussion on the LT tires psi. I have Kumho Road Venture AT51 LT tires on my 2014 and Falken Wildpeak AT3W LT tires on my 2003 Expy. 35 psi. Never noticed anything unusual with the ride. I was thinking you only increased the pressure if you were carrying or towing heavy load. I'll look into this and try higher pressure once the blizzard stops. Those AT3W's are really Falken nice with 18/32 tread depth!