Originally Posted by Jmugs
I have a few questions:
a) How many miles should I expect out of these.
(It's my daily driver including some occasional off roading on the beaches)
b) What psi should I be at during the Summer/Winter
c) What psi should I be at on the beach/snow/other
DuraTracs will last quite awhile, if properly aired and rotated. Tire shops routinely overinflate aftermarket tires on 4x4's. For 33" tires you should be about 30-32 PSI. It sounds low, but I'm running 35" DuraTracs on my JKU at 30 PSI, and they're dead-on.
To get your PSI right, use the chalk test. See post #54 in the link below:
Highway speed drifting
You should keep the PSI the same for driving in snow on roads, unless you're in something Biblical. For deep sand and mud and off-road snow, I wouldn't air down below 15 PSI, or you could break the tire's bead. If you do decide to air down, make sure you have some way (on-board air, etc) to air back up before you get back on the roads.