What BMW has a lower ratio bolt in diff (to the E46 M3)?
I remember reading about an old BMW that had a LSD that would bolt up in place of the E46 M3s diff, with a lower ratio (IIRC 3.15, 3.23, something like that). It might have been a seven series. Can anyone shed some light on this for me?
Originally Posted by yousharenow
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