I just put Hankook 35 X 12.50 X 17 MT's on my Ram. Dealer HAS to inflate to 60psi front 70psi rear per: Section 95550 in the new subarticle 8 of article 4, subchapter 10, chapter 1, division 3, title 17, California Code of Regulations, effective 9/1/10.
I did the 'chalk test' on the new 'E' rated tires...60psi front looks good, nice even scrub of the chalk accross the tread. At 70psi, only the inner blocks showed any scrub, outer blocks not touched! Didn't get even scrub accross the tread until I got down to 50psi. At 70psi, the rear tires in a lightly loaded pickup will rear out VERY quickly.
Again, CARB's ill concieved regulations screw the California public. The 'chalk test' is definitly needed if you want to get decent tire life.
BTW, I originally did the 'chalk test' on the BFG 315/70/17 ATs and found 50psi front/40psi rear gave even wear on these load range 'D' tires...I got over 70K miles on the last set, rotated every 6K miles.