Tricky corners, how to know when to stay in 3rd and when to go into 2nd

[Racer Boy]

Does your data show your speed at the end of the straights? That is what you should look at, when comparing 2nd or 3rd gear in the same turn. You need to see which gear gives you the most speed at the end of the straight. As thstone says, it's about the acceleration coming out of the turn.

I recommend getting your downshifting done before the corner, so you can concentrate on getting through the corner as smoothly as possible. Downshifting in the middle of a corner is good way to unsettle the car, not to mention increase your chance of a mistake. Sorry RK, I think you are speaking hearsay!