My aftermarket wheels were balanced using stick-on weights, and some clip-ons on the inside face. The stick-ons are not all "on center." I'm certain they are balanced against both types of vibration, and yet there are no ugly, finish-ruining clip-ons on the outside.

Function before fashion. '96 Contour SE "Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998