When you raise the Jeep the rear axle will shift to the right and no longer be centered.
As the suspension extends while you drive, it will shift more. If your right rear tire rubs, you will need to re center the axle.
Having wider tires than stock will make the issue more noticeable.
In my case, I had about an 1/8" clearance between the tire and the tub, so I centered it to avoid problems.
I don't recall how much it will shift, but you can calculate it if you want because you are basically just measuring sides of a triangle. I think it will shift around .5" or so, but I could be wrong.