San Rensho --
This is a great "how to" that I recently followed. I used these same products and it worked out well. The only thing I would stress more than it was in this write-up is to minimize the "sanding area" -- the paint matches but there is a slight difference in the shine/finish, so it works well when fixing scuffs & really minimizing how much surface area you treat & paint.
BMWTips wheel-scuff repair
Here's the before:
Here's the after:
