Recently changed from 20" back down to 18". I started with a OEM Sahara set up with 255/70/18. Running these wheels do require the pinch weld mod. I didn't really enjoy driving with these....70 series tires didn't work well for me and fuel economy got worst. Then decided to use the next largest size, 265/60/18. Tires are Nexen Roadian Pro RA8. These are a great A/T tire.... very comfortable and overall ride and handling is excellent.
First pic with 255/70/18
2nd pic with 265/60/18