Originally Posted by torsionbar

Here's what I'm using:

RAD Lug Bolt 12mmx1.5, 26mm Shank, R14 Ball Seat, Hex 17
Part number: 20-4067-B

When I first got them, I compared how much of the thread protrudes beyond the backside of the wheel, and it was the same length, so 26mm shank is correct at least for the E350 sport wheels. So you'll need longer than 26 mm if you intend to use wheel spacers.

Here's a few photos of my car, to give you an idea of the offset. I think they're perfect as-is, and don't need any spacers. Therefore, *if* the E55 wheels fit on an E350 perfectly, without spacers, they should fit the same on w210. I'd bet there's a lot more folks who have put those E55 wheels on another w211, vs. on a w210.