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      05-20-2010, 03:27 PM   #12
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Drives: 07 AW Z4C 3.0Si
Join Date: Aug 2007
Location: San Diego

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Quote:
Originally Posted by erhanh View Post
.... What about the diff? Are the ratios same between 3.0si and M?
I don't have info on the M diffs. The following was posted by Ron Stygar in response to another question. I don't know why BMW used two different ratios between the manual roadster and coupe while the same for the auto.

3.0si Roadster
M = 3.23:1
A = 3.64:1

3.0si Coupe
M = 3.46:1
A = 3.64:1
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