ok, i have spent the last 2 hours searching this site, reading threads, etc. I know there is a ton of information out there, but it is almost too overwhelming.
Here is my situation..
I already have a set a 325/60/20 Nitto Terra Grapplers, now i need to figure out the right rim to put them on. I have the ReadyLift 3" front lift and the 3" rear block.
I am looking at a 20x9 rim with +12 offset or a 20x9 rim with a +30 offset. Would either one of these work better with this size of tire? Do I need the +30 to keep the tires tucked in? Or will I rub on the control arms on the inside of the tire? Can I run the +12 without any issues? Thanks for all the help.

 

That is basically a 35x13.00-20 tire. You didn't give any infor on your truck but I assume you have a 04-08 F-150. They are not gonna fit using either wheel whether you have a 4x4 or 4x2. You need more lift. I'd suggest selling the Readylift and buying a 6 inch Fabtech lift.

 

You definatly want the +12 offset with the lift. You can fit stock 33' i might be wrong but a 35 with a 3in lift should be fine.
Your problem is you need a 9.5 in width rim minumum for that tire per nitto specs for safety.

 

I had the same set up and the same tires and they rubbed bad. I left the level kit on, installed add a leaf in the rear and put a 6" procomp lift kit on it and tht solved the problem. I agree with wandell. Raise it up