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      10-17-2011, 08:14 PM   #108
Brigadier General
aajami's Avatar

Drives: Space Gray '09 E92 M3
Join Date: Dec 2008
Location: Manhattan Beach, CA

iTrader: (4)

Originally Posted by Nelrock View Post
They also put that tiny OEM spoiler on the trunk of the E92...I can't believe that has any functionality.
I've even heard some argue the weight savings of the carbon fiber roof make a functionality arguement thin.
So...I think BMW does a few things that are for style vs functionality. I for the dome...and hope it stays. If not...I'm sure one of the aftermarket companies will revive it.
Believe it or not, the M3 spoiler makes a pretty good difference in downforce. Someone posted pictures of wind tunnel tests with and without the spoiler, and the difference given the relatively small size of the lip was impressive.

As for the CF roof, its function isn't specifically to reduce the car's overall weight (which it does), but it's to lower its center of gravity.
'09 E92 M3: Space Gray, Black, Carbon Leather | ZTP 2MK ZPP 2MT 6FL | link 1 / link 2
Mods: M Performance exhaust | ZCP retrofit | Euro airbox | GTS DCT flash | JPN 240 ECU flash | Euro LCI taillights | CRT lip | OEM alarm retrofit | Space Gray bumper plugs | BMW Performance: Mk. II spoiler / Mk. II non-electronic steering wheel / mirror caps / front grilles / side gills / intake louvers / emblem