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      01-30-2013, 11:11 AM   #11
Red Bread
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Drives: Smog machines
Join Date: Oct 2008
Location: Austin, TX

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Quote:
Originally Posted by nospam View Post
I don't think this is correct. My understanding was that many AWD systems are FWD based with LSD in the back.

BMW AWD systems are RWD based (until the next generation of the X1). I don't know how the X1 AWD system works. I believe that because of the way BMW DSC works and the fact that the M Sport use DSC torque vectoring (performance control) that using a donut spare is safe for emergency use (low speed, short distance).

I definitely plan to do more research since I plan to remove the RFTs and carry a donut.
Offhand, I can't think of a single fwd based setup that uses a mechanical LSD in the front or rear.

Again, the X6 has an available LSD for the rear, which I believe makes it the only non-M BMW with an available LSD of any sort.
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