Quote:
Originally posted by mclaren55
I was told from someone that the 6 Speed sport packages came with a 3.15 rear diff. And that only the auto's and non sport packaged 6 speeds came with the 2.81. Either way, I am not big on increasing my gas consumption by that much more just to get a little more acceleration out of the car. Thanks for the tips though, like I said, I will most likely keep it stock and just save up my cash for this seasons racing budget.
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Partially right. It was the late model 540iA (automatics) that came with 3.15 peglegs as opposed to early pre '01 I believe automatics that had 2.81's. All 6-speeds though retained the 2.81 throughout the E39 lifecycle.
Gas consumption is not that much more noticeable with the 3.15. It's really not that much of a ratio change as opposed to a 3.46 yet with the 3.15 either LSD or quaiffe atb you will feel like the car is supercharged.