Originally Posted by 5speedin2.3
i had my 31x10.50x15's on my truck with almost no lift in the front.
i would say 33's should be fine.
"You would say," but you don't know. Your 31 x 10.5 are a completely separate ballgame, and are not relevant to this discussion.
33x12.50 WILL rub your radius arms and your front swaybar at full lock (or partial, depending on your tire and how knobby it is) with only a 3" body lift. A 1-2" spacer will help alleviate, but you will still experience rubbing when you bottom out @ full compression. It does not matter what wheel size or small offset you have...and if you get an offset too big, it will cause extra wear & strain on your front bearing, joints, etc. which you don't want. It becomes more of a pain excessively costly...
I would recommend 32 x 11.50 x whatever rim. A 32.5 tire would work too with lessened problems, and that 0.5" difference from 32.5 to 33 DOES matter. They fit, but with rubbing, and after use and a couple years, your springs sag and you start having fender running and clearance issues.
I'm a Gen III like you and run the 33'sx12.50's. Looks badass, and if you don't mind the rubbing and adjusted steering & driving, it's fine. If you are buying new tires from a dealer, just go with the 32. Looks just as cool, without the issues.