I never had good luck with Mothers even on new truck rims that were always kept clean. To much streaking and scratching with their paste polish. I think its too harsh for final polish.
I have used them all and what I have always gone back to is White diamond.
it has a grit to it but it also has a final mirror finish to it. It really works good and its what I use on my RS700L tanks I just made.
http://www.whitediamondamerica.com/i...al-videos.html
also dont forget that when you look at a truck rim your standing 4-5' above it
with models were looking 4-5" away and will see every blemish in the aluminum!