You're right, there have been people who have touched up just one wheel. Quick google search brought up this. http://www.bmwtips.com/tipsntricks/wheel-repair/wheel-scuff-repair.htm
It seems simple enough, and the results look quite good. I feel like it would be easier to remove the wheel completely and paint elsewhere, than to mask the whole car like hat guy did. [shrug].
Sorry, don't know about the factory paint. Good luck; let us know if you find out.
I think I remember someone referencing that bmw DIY before. It seems like that would be the correct process. I also think that is where I heard that the wheel paint is the same - or someone said that Saab and BMW use the same paint
Maybe you can slap on your donut and take care of the wheel out of reach from the children's over a couple of nights and spray the wheel during the day when it is warm enough. (will it get warm enought to spray in January down there?)
Oh, the wheel is a spare replacement I am putting on. I wouldn't have any problem taking it off (since it's not on) and even taking it to someone but I just want to make sure that it's well-done and matches the other wheels.
Well, I will put my couple thoughts in here since someone brought my wheels up.
By no means is the paint I used a factory color.
But the process was simple, and if it was just one stock wheel and i could get the same color, I would have done it slightly differently.
1. Dismount tire (not 100% necessary, though it makes things much easier).
2. Sandblast the old paint off (if i were just finishing one wheel, i would just scuff with like a 400 grit sandpaper).
3. Lay down some primer.
5. Clearcoat (although with stock wheels, i am not sure if this is needed.)
Worst case, if you had to prep and paint all 4 wheels so they matched, I am sure that you could do it all in a Saturday, and then just let them dry for a day or so. It sounds like you are very concerned with them all matching 100%, so this sounds like it is probably your best bet.
You could also paint one at a time if that would make it easier (since it sounds like you have a 5th wheel to run on there for a couple hours while you paint) and you could paint one and then paint the next one 3 days later.
Or maybe it is just time for a wheel upgrade
I've got a replacement, it's just got a little curb rash. But you know, after I pressure washed it up along with some Meguiers wheel cleaner, it looks new from more than five feet away. I wonder if I got it off anyone on here? Someone selling 4 on fleabay in Mass? It's the old ten spoke stock 9-5 base wheel.
I wanted to replace one of my wheels due to some scraping from curb rash but not sure if its a 16" or 16 1/2" rim...how do you tell the size for appropriate wheel size. The tire says R16. So is it a 16" rim?