This is my first post. I am looking at wheel and tires for my 2013 Rubicon. I really like the XD rockstar II wheels, but in 18" they only sell them with 0 offset. They do make a 17" with the -12 offset. Then I found rugged ridge wheels in an 18" with 4.75 offset. What are the pros and cons of 17 vs 18? I can assume the 17 is the better choice maybe because of the bigger sidewall? Educate me please.