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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > All-Wheel-Drive (Xi / xDrive) Talk > XI power distribution??



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      03-10-2012, 04:38 PM   #1
bimmerlicious
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XI power distribution??

just out of curiosity, i know that xi system distributes power front and back depends on the situation but does it distribute side to side as well?
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      03-10-2012, 05:21 PM   #2
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yes
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      03-10-2012, 07:04 PM   #3
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No, there is no side to side adjusting. Just front to back. Need to go out and buy 2 lsds if you want that.
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      03-10-2012, 08:07 PM   #4
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or an evo
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      03-10-2012, 10:07 PM   #5
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Yes and no. It can apply the brakes to one side which will apply more power to the opposite side.
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      03-10-2012, 10:30 PM   #6
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Quote:
Originally Posted by ExpensiveTaste View Post
Yes and no. It can apply the brakes to one side which will apply more power to the opposite side.
Truth
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      03-10-2012, 10:46 PM   #7
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In terms of traction, pretty much all cars these days can do that to their drive wheels. That's what stability/traction control does mostly...

If you meant to ask if the torque shifts during cornering in non-slip situations to reduce understeer (like GT-R and EVO) then no...I believe the X6M was the first BMW to have torque vectoring xDrive to improve handling. Audi's S4/S5 don't have this standard either and need to be ticked as an option.

Edit:
They call it Dynamic Performance Control...
http://www.bmw.ca/ca/en/newvehicles/...ontrol.html?x6

Looks like X5M has it too...
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      03-11-2012, 11:18 AM   #8
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Quote:
Originally Posted by pits200 View Post
No, there is no side to side adjusting. Just front to back. Need to go out and buy 2 lsds if you want that.
Oh, and an LSD will not do that. Limited Slip Differentials just lock both axles together if the car is in a power situation as opposed to braking or cruising. You would need an electronic differential to actually distribute power from one side to the other selectively.
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      03-20-2012, 10:33 PM   #9
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Quote:
Originally Posted by ExpensiveTaste View Post
Yes and no. It can apply the brakes to one side which will apply more power to the opposite side.
this, "E-Dif"
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