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      02-08-2011, 11:40 PM   #45
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Drives: Space Gray '09 E92 M3
Join Date: Dec 2008
Location: Manhattan Beach, CA

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Originally Posted by alpina527 View Post
Originally Posted by richpuer View Post
No, stock tips are 75mm measured from outside edges. I've measured it precisely.
I stand corrected. I have just checked and oem is 75mm
Then I have to assume that the 74mm reference for the M Performance exhaust is inaccurate. I know tip diameters are mostly meaningless, but I wouldn't understand how BMW would commission smaller tips when bigger is generally perceived to be better when it comes to aftermarket exhausts.
'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