Can't sleep, so I've been taking a stroll on eBay - to no avail. I'm looking for a Mercedes Star with a diameter of 45mm to 50mm. Anything bigger won't fit onto my wheel. Needs to fit on the circle in the middle, which is exactly 51mm in diameter. I went to a Mercedes dealership but I haven't had much luck there. Any ideas? This one would be awesome but it's 56mm in diameter.