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      05-01-2013, 09:38 AM   #1
Scott_in_FL
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OEM Style 312 Ferric Grey 21's on F10 M5?

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.
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      05-12-2013, 12:49 AM   #2
Dwn2Race
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Saw this on another site. Looks great. Fits perfectly.
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      05-13-2013, 02:11 PM   #3
Scott_in_FL
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Wow, that does look good. Great find! I knew it would only be a matter of time before someone tried this. Hmmm, for the cost of swapping out my 343's to these, it might be a straight wash. Now I've got something to think about.
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      05-13-2013, 06:31 PM   #4
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These look f'ing awesome. Id prefer them in gray, and 20s. 21s look really big to me on the F10, just my opinion.
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      05-13-2013, 09:38 PM   #5
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Quote:
Originally Posted by Scott_in_FL View Post
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.
Tis wheel is about 50% heavier than our own wheels. Adding that much unsprung mass will adversely affect handling and ride quality.
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      05-19-2013, 12:53 AM   #6
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Guys - I have a staggered set of 20" 312s in Ferric Gray for sale (TPMS and caps included). Hit me up.
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