Nope, doesn't turn off everything at least on the 35i. On a track if you kick the back out more than about 15 degrees the stability management will brake a rear tire to bring the car out of the oversteer (and slow you down, not what you want on a track). Also if you are sliding the X1 sideways and attempt to shift, the transmission will not allow it and will hold you in that gear for about 5 seconds after the car is back going straight. I believe the shift lockout is again because not all traction control really gets turned off and the car is still reserving/monitoring the engine power/rpm to determine wheel slip and changing gears might make that detection not work correctly and hence shifting gets locked out. Of course all of this is with as much traction control turned off as possible by long holding and I have not experimented with pulling any fuses. I've had to adjust my driving lines at the track where I'll need a shift right after a turn in order to avoid the possible transmission lockout. As for the oversteer correction, it really only happens when you're having a little fun at the track and not getting the best time on a corner but it does give a good tank slapper when it kicks in. No lights show up when either of these stability items occur either.
I've also had both of these occur when having fun in snow, and it's easy to not notice or consider it a fluke until you have a good way to reproduce it.
Last edited by edx1; 02-16-2017 at 12:16 PM.