Groundfish, Thanks for the considered advice. I especially welcome the explanations as I need to understand the "why" - it's just the way I am programmed. I adopted TCS=0 based on the general understanding that all aids help but you can do better once you dispense with them. Upon dispensing TCS=3 I improved significantly - QT, race times, DR - the lot. With your explanation, I accept that I moved prematurely and that I did not properly understand the "why" and hence my development has plateaued on FR/MR drives. With TCS=3 I was just mashing the accelerator. TCS=0 taught me to correctly ease into it. I have not properly considered steering input. You have correctly pointed out that I have simply applied full opposite lock. Similarly, I am learning when to lightly apply the brakes and more importantly ease out of full braking sooner rather than a later quick release. The game feedback helps with that. I have not figured out the steering input or the signals when I am doing it wrong. I expect that I need to turn up the volume and listen for tire squeal. I have had decent success with trail braking and tune the BB only when I reach a level of skill whereby I can see the effect in lap times. I am not at the level for the Nord or Suzuka but am there for the Red Bull Ring and Fuji. So, my takeaway is that I am going test with TCS=3 and drive such that I do not use any *red* on the gas pedal, and, Use less steering input, release the steering and apply gas at the apex - sooner that I do now. In the end I plan to take what I learn and apply it to TCS=0. My general belief is that TCS=3 has a cost during the straights during gear changes and that cost is significant. Will let you know how it goes.