Originally Posted by Nigelo
Hey George, didn't realise you were an auto 335i. Does that mean you went from 3.46 stock to 3.15? I'm kinda planning on going shorter rather than longer.
I went with the 3.85 M3 manual diff first which was a bit short for my liking then fitted the DCT 3.15. I have RB's and am always at the 440whp level so the longer 2nd allows for slightly better traction on road. With the 3.85 I would loose traction at the lower end of third with stock Michelin RFT.