Mike_Rupp said:
So what you're saying is that you like 40psi?
LOL, that's just about right.
Two things seemed to be important to me - lateral stability, and equal pressure front and rear.
I found that I cannot find any difference in handling by pumping the tires beyond ~40 psi (it may be different for skinny tires like 215/85 or 235/85), but the ride was getting progressively harsher. So I settled on 40-42.
Front to rear difference: there were two reasons in LR's pressure choice - one obvious, to closer match the rolling radius of lighter-loaded front tires to that of heavier-loaded rear tires. I buy that.
Another was to go slightly beyond that, and introduce understeer by reducing the rolling radius of the front tires below that of the rear tires. This is okay on a stock truck with open differentials; if you have lockers, the understeer is greatly exacerbated under throttle, and changes with almost as much oversteer when the lockers are unloaded and open. Similar tendency occurs on lifted trucks due to change in suspension geometry under throttle and braking.
A few white-knuckle rides on I-70 between Aurora and Grand Junction made me realize that I'd rather live with a neutrally-behaving vehicle than with one with that much temperament. You can't imagine how much difference (for the better) was brought about by extra 5 psi in front tires.
