Well, I run 19” wheels on my touring with 255x60 Wildpeaks. The my have a tread width of 8.7” and a 31.1” overall diameter. I have zero rubbing. Let me know if you want a pic or two. Of note, I had to switch out my spare to a larger OD to better match the larger tires.Tell me I can get some 18 inch wheels and squeeze some 2 peak rated tires on this without them rubbing.