If you want really good results you could have the wheels bead blasted and then paint them with professional equipment. That's what I did...but painting car and motorcycle stuff is a hobby of mine...I still recommend bead blasting thought to remove all the old paint and crud, shouldn't cost much more than 20 bucks a wheel. Then if you are going the aerosol route, use a can of self etching primer first, then the color you want, then clear coat. If they sell sealer in a spray can use that between the primer and basecoat...What you could do too that would last a long long time is have the wheels powdercoated, most powdercoating places include the price of stripping the wheels in with the total price. Plus powdercoating is really tough. Tons of colors to choose from too...expect around 75 bucks a wheel, 100 tops or you're getting ripped off...