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Re: Differential question.. (archive)
[ Follow Ups ] [ M5 (E28) Message Board ] [ Msg. Board FAQ ]
Posted by Rod... on April 22, 2001 at 12:17:48:

In Reply to: Differential question.. posted by Jim G on April 21, 2001 at 23:38:19:


Hi , I come in peace as a fellow BMW owner. I am wanting to put 4.10 gears in my 850ci. All M5s(e28)(e34) 540s 750s and 850s share the same size diff. Most of the 8 guys own 6spd, so they havent needed gears as low as 4.10. I have an auto.
I need to know if anyone who reads this board has put 4.10 in an M5(e28). Korman lists them on his website, but I havent yet been able to contact him. Any information on whereabouts of 4.10 gears, who makes or sells them etc would be greatly appreciated. Thanks, Jim.

I would suggest the 3:91:1 ratio. It is the more common gear set for the 87-92 M5 & M6's. The 3.73:1 was the next diff ratio in the 92 & 93, M5.
The 4:10:1 ratio was used on the older cars with an automatic.




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