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      03-27-2020, 10:24 PM   #28
Whipple
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Drives: 2015 BMW M6 Gran Coupe
Join Date: Jun 2011
Location: New York

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Looks really good !! Is your car lowered ?? I’m on the fence of doing custom 20s or 21s , I live in NY I’m going to do a custom forged 2 piece wheels ,how good do the 21s absorb pot holes lol ?? Here is the fitment recommended by the manufacturer
F06 F12 F13 M6
21x10 ET25 Deep 275/30/21
21x12 ET20 Super Deep 325/25/21
Depending on tires used the fronts might have to use 265 , pirelli 275 is narrower than Michelin’s 265 or close to the same
It seems 21s have more choice of tire brands compared to 20s in a 12”wheel , 20” x 12 I only have a choice of Cup2s or Toyo R888 , No 4s For the rears. So that would be 20x10 ET20 and 20x12 ET15
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