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The same things happen in my 335i Msport regarding DSC.
Sport+ mode is everything in it's sportiest mode, but, with DTC on.
DTC is 'dynamic traction control', which allows some rear tire power slip along with more rear sway angle, but only up to a point. How far? I don't know as I haven't taken it to a track and don't want to try the limits on the road.
When in sport+ mode if I hold down the DSC button DSC shows "off" but then all other settings are no longer in sport+ mode, nor in sport mode.
I have the M adaptive suspension so when in sport+ mode all is well, but if I try to disable DSC completely the suspension reverts back to normal mode.
So, yes, you can disable DSC completely, but it seems you can not have all of the sport settings along with DSC off.
If this is a glitch in my software I'd be very interested to know how to get my dealer to correct it.
Maybe this is a BMW safety protocol, but it seems really silly if it is.
If DSC can be completely off and all other controls are then set to normal/comfort mode the car can still be drive into drifting. However, you now have a less responsive suspension that is softer. Is that really safer?
And why is a slower responding throttle any safer than one the reacts quicker to driver input? On a track I would want the sharpest throttle response, best suspension setting, and let me do the controlling if I want DSC off completely.
Truth be told, sport+ with DTC activated is fine for me for street driving as I can still have fun and there is still a safety net if I overcook a turn or something slippery is on the road. But other cars get a negative for not being able to completely turn their traction and stability controls off, yet I never read this about a BMW.
Again, yes you can turn DSC off, but only under certain conditions with certain control settings also set. In reality you can't have the cars controls set to optimal AND turn DSC off.
Maybe we should write to C&D and R&T and ask them to take a look at this and see what they come up with?
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