facelift/pre-facelift & 1/2 model years??

[TiAgX5]

Originally Posted by PropellerHead

You may be, but appear not to be aware of how a non XDrive/prefacelift AWD system works:This just isn't true. It should read "Pre-facelift Xs were able to direct power to 38% to the front or 62% to the axles."

I don't have any issue with how this happens- DSC enabled. Never said any different. What I said was that the face lift models with XDrive offer this up to 100%. Pre-face lift X's do not. Plain and simple.

Here is a source from BMW that explains the difference. Pay attention to the 2nd and last paragraphs. The differences in the systems are clearly not what you think they are:

When the DSC/traction control activates the brakes on a slipping axle where do you think that axles disrupted torque go? The other axle by chance? If you don't think that's the case you don't understand the basics of driveline dynamics.