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  1. E90/E91/E92/E93 (2006 - 2013)
    I would like to replace my differential on my 2005 320i E90 with 3.38 ratio with a 2010 E90 LCI diff with ration 3.64. Is this possible and should there be any negative effects?
  2. E46 (1999 - 2006)
    I'm looking to swap out my 3.46 differential (2003 325i) for one with a higher ratio. I got what appeared to be a pretty good deal from a salvage yard on a used Z4 2.5 AT diff (3.64). The outside of the diff was dry as a bone when they brought it out from the salvage yard. I had a plastic bag...