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      06-06-2007, 12:28 AM   #1
Sick Speed
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Question 2008 Rear Diff???

I posted this awhile back but does anyone know what rear diff will be installed in the new M3?

Thanks in advance.

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Last edited by Jason; 06-06-2007 at 01:37 PM. Reason: Wrong forum recognition
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      06-09-2007, 10:03 AM   #2
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Originally Posted by Sick Speed View Post
I posted this awhile back but does anyone know what rear diff will be installed in the new M3?
SS
It's basically like the one in the E46 M3. To quote Car Magazine from their M-Division tour article,

"The M-differential lives on in the E92. It's based on the same principals as before, but the components are new. That means the diff is mild under turn-in to avoid understeer, but locks up progressively with up to 100% lock-up possible. As before, it's less aggressive under braking than acceleration, so it won't give a tricky handbrake-effect as on the more track-biased LSDs."
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      06-13-2007, 03:48 AM   #3
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Quote:
Originally Posted by GregW / Oregon View Post
It's basically like the one in the E46 M3. To quote Car Magazine from their M-Division tour article,

"The M-differential lives on in the E92. It's based on the same principals as before, but the components are new. That means the diff is mild under turn-in to avoid understeer, but locks up progressively with up to 100% lock-up possible. As before, it's less aggressive under braking than acceleration, so it won't give a tricky handbrake-effect as on the more track-biased LSDs."

The diffs change from M3 to M5 - 3.91 in M5 and this is what I am guessing will be in the new M3. I was just looking for some confirmation. The 3.91 is what I installed in my 04 M3 and the difference from the standard diff is night and day. 4th gear feels like mid peak 3rd and it lists the rear to the right when I get on the throttle.

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      06-13-2007, 09:34 AM   #4
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Quote:
Originally Posted by Sick Speed View Post
The diffs change from M3 to M5 - 3.91 in M5 and this is what I am guessing will be in the new M3. I was just looking for some confirmation. The 3.91 is what I installed in my 04 M3 and the difference from the standard diff is night and day. 4th gear feels like mid peak 3rd and it lists the rear to the right when I get on the throttle.
SS
In the BMW Press Release specifications the final drive ratio is listed as 3.846. It may be different when the 7-speed DCT comes out.
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Last edited by GregW / Oregon; 06-13-2007 at 10:41 AM.
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