I figured it out.
Change the TCS Setting from the main menu car selection screen when getting into a car, the setting will stay then, until you change it again on another car from the car selection page..
What is weird is when changing it at the in race quick tune menu it will be displayed in there as what you changed it to (In my case 2) to, but when you go to race it will use (10) what is default (I believe)
If you change the setting from the in race quick tune menu they will revert to what you had it saved at during car selection. UNLESS you select another car, The new setting will be displayed there and will be implied when you select the new car, that will then become your new universal TCS setting.
So its kind of like a set it in the car selection menu and forget it, I set it once to 2 and left it alone & now its always 2 for every car. Just do it from the car selection menu when choosing a car.