well theres 2 reasons i didnt run aftermarket 19.5s first is i wanted to retain the classic look and second was the offset issue being i was going to lower again in the rear, i did not want a fender "too close issue" and i knew if i could locate the P-30 19.5's my offset would cause no problems.....and im glad for my build i went this route.....turned out trick and made the dually look shorter