I recently came across some 20's stock alumium wheels for my 02 1500 and was wondering will there be an issue with mounting...ie space/offset required? I know this size wheel will add to the crappy gas mileage.
20s are heavier and lower towing capacity on my truck by 1000# so might want to take that into consideration.you can go as big as you want 17"-24" bigger you go the smaller the profile of tire you use unless you have alift
I switched from the 17's to the 20's and love the change. I have not noticed any difference in mpg either. (i added CAI and exhaust at the same time as the 20's though). Feels, drives and looks like a whole new truck!