Originally Posted by Jaypod
Coming out of MT M3 and recently into a DCT, I have played with the transmission upshifting and downshifting in and out of turns etc. While I wouldn't say it upsets the car much you still have to pay attention and make minor corrections etc. I still do believe trying to maintain good habits and tell my students to always brake and change gears in a straight line. After all we are lapping and not racing.
Agreed, I do the same with my Novice and Intermediate students. You are busy enough working on much more fundamental elements of performance driving.
However with some advanced students that want to improve their skill and lap times, it is something I do work with them. BTW, shifting mid corner can also be applied to MT cars, it just requires much more skill to execute.