if it is really cutting in to your tire i would be worried but it only looks like its running and if you have off road tires those sidewalls are meant to put up with a lot more than an occasional rub at full crank...

just my opinion..

 

ya but not direct pressure for 20 or 30 rotations over and over, eventually it will go thru the side wall and destroy his tire.

you could get some wheel spacers, just to see if a wheel with less backspacing would fix your problem. im assuming you went with rancho to keep your stock wheels tho. could also take your truck to a shop and have them cut off those stops that the tires are hitting.