What's the brush finish...i.e. is it a fine brush, medium, coarse? If it is fine, can you do a Scotchbrite on the wheels to match? Of course, it would require some directional sanding just like the brush on everything else. Brush finish is a tough one to duplicate on wheels. If Scotchbrite did work, it would make it fairly easy to upkeep. You might experiment on some other polished aluminum piece before you start brushing a wheel.

I am impressed that you are trying to keep the continuity. I have a polished aluminum mirror on my 39 and it clashes with the polished stainless trim. I am thinking of machining a stainless mirror head to polish so it will match.