Sanding Road Wheels

I take it you are reffering to the mold line that needs to be removed before you can put your wheels on? If so, my method is to simply scrape the line off with a blade. Unless there has been a problem during the molding process, and the two 'halves' of the wheel are not centered properly, I always end up with very circular wheels using this technique. Tip: If your wheels have rubber rims, chipping a bit of the rubber off will look good.