For those of you who have put larger wheels and tires on your Rubicon I was wondering if it is really necessary to get the fender kit to run 26x10x12's on the front? Do 12x7 rims create any rubbing issues?

 

No. They will fit fine. 26x10x12 fronts and 26x12x12 rears will fit on your stock rims too with no trouble at all. You just have to trim the heat shield on the muffler a little as that is the only place that even comes close to rubbing.