Surely everyone has seen this terrific 21" wheel on 7-series cars.
http://i45.tinypic.com/28rpbfm.jpg (it's the wheel in the bottom pic).
It shows fitment for F10 5-series cars and I'm wondering if anyone has seen it installed on an F10 M5.
The only size issue is the width of the front rim. Our 20 inch 343 rims measure 9x20 and the 312's measure 8.5x21. The rear widths are the same at 10.
It also looks like the offset differential can be cured with some spacers. The 312 offsets are 44r and 25f. The M5 offsets are both 34. Since we believe that a 10mm spacer is needed on the M5 rear, it looks like the 44 offset on the rear will be perfect. For the front, we may need a 20mm spacer.
Any thoughts on this? Could be a really hot looking setup with understated OEM looks.