The new paint is lighter looking because it's cleaner than what's on there now probably. Lol. All kidding aside, you might just have to blend it in more by spraying a little wider area. I've used the Wurth on several repairs and have always had good results. To get a perfect match would probably require painting the whole wheel though.

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'06 X5 4.8is, TiAg/black, cold weather pkg., comfort seats
'07 750Li, TiAg/black, sport pkg.
'05 Ford F350 silver met./slate gray, Lariat, 6.0 PSD, CC, DRW, FX4