What final drive ratio did you get in your M3 diff?
The two choices are 3.15 (M3 DCT) and 3.85 (M3 manual). The stock auto 3.46 ratio is pretty much in the middle. I guess no one would want to make their car slower so youd have to get a 3.85 for auto
Mines a manual(3.08) and I chose a 3.15 differential which gives me around 2.2% change vs stock which is quite negligible. I'm quite glad for this as I find the stock gearing to be fine and didn't want to change it.
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