I simply brush paint mine after the base color and camo is applied.Any "bleed- over" is simply GENTLY scraped away with a sharp blade after it dries.Brush painting road wheels is a good way to improve your brush painting skills,and improve your patience.It's monotonous,tedious,and meditative!I usualy do it before I have to go to work when I have night shift.It gets my mind ready for a totally boring shift!I use Revell-Germany #9 Anthracite,It's a pretty good match for tire rubber.