well ive been a fan of mickey thompson wheels so i took advantage of their 18x10 blowout they had i got them for 148$ and i ordered 325/60/18 cooper discoverer STT well the tires came in today and took the wheels over and had them mounted and balanced but i have to wait until next week to put them on as my truck has a appointment for a 2in leveling kit... the more and more i look at these tires they look freakin huge and i hope they fit without any issues most people say they wont rub beacuse of the 6inches of backspacing i hope there right... i will post pictures when they are on

 

and ive got a question what tire pressure do u guys like beacuse the tire monkey told me he wouldnt go more than 30psi and ive read some post that people were running 40-45psi whats a good pressure for a 325/60/18

 

That wheel will stick out 2 inches more than stock, going to be close in the front with those wide tires. I'd run about 42 to 44 psi in them. Ought to look great!

 

So which wheels did you get and where did you get them from?

 

the classic II's and from mickey thompsons website theres a big banner on the front homepage to click and this bargin thing comes up

 

i just hope they fit without any rubbing hahah my *** is grass if they do beacuse ive talked my dad into these and he said they better not rub hahah i mean if its just a little plastic that can be fixed but ive seen a couple members with M/T's with 325/60/18 and noone had a problem i think the one member is Bryndon and the other one is Flyingsquirll

 

You should be fine as far as fitment, but you may have to trim a little plastic.
As for tire pressure, I'd use 40 psi as a starting point. 30 psi is too low.