if one question had one answer, life would be so easy.
I will answer for the Ferrari, as I am quicker around here in that than the Nissan.
and I do not stand on anyone's toes.
i am only talking about the car and not driving the car.
The Ferrari was doing the same, I started with wing, although it often does not make much sense to the speed you are going and the occurrence and as I am not in a position to see all the instantaneous dynamics. ( yes I know it is mid-engine )
I increased the wing, with the view of also increasing coast settings, then run in the back of my mind a change in rear camber.
( Generally speaking, I would go for rear camber if all the other parameters look sensible )
I will do all three, not supposed to, but it saves a lot of time.
If that cures the problem, I start to remove the rear wing, especially circuits with straights that are affected by too much wing.
If that fails, I start to get more aggressive with all the settings, also looking at the rear toe settings and combine that into it all.
If all that fails and I am left with a car that is losing too much time on some corner entry, I alter my driving style to compensate, if that fails I live with it.
Once I start to get into the ARB and softening the rear suspension ( or even stiffening the front to induce a small amount of understeer, interesting that you can actually make the entry and half mid-corner speeds better, but just at the right moment give a little bit of understeer to counter the rear oversteer ) I have to take the whole circuit into the equation. Starts to get a bit too heavy for a Sunday race. But as I can do all that in my head with just a dozen laps I find it quite easy, explaining it all is far more difficult.
I am no whizz-kid at setups, but I am quite good at getting the right setup for me.
I have on several occasions been witness to some very clever people at this setup malarky getting a setup completely wrong, saying so and starting all over again,
So don't think that it is all a,b,c,d etc, it's not.
Two things I concentrated on was my ability to not make mistakes that make me come off, and setups, both I am okay at, all the rest of it I am at best mediocre.
You are inherently a quicker driver than me, so if you out-qualify me, surprised I definitely am not.
Most of you Rotters here on our Wednesday and Sunday leagues are inherently faster than I am, ok some are in the process of learning, I am good at getting the car good at enhancing my poor abilities, not wasting my efforts on making a snail into a ferret.
What is very important, I do this all the time, look at your whole lap. I then break it into corners, I then grade them into the importance of each corner.
Do this in your head, I then make adjustments corresponding to that.
I don't look at one corner, disregarding the rest of the circuit, I am always balancing the whole circuit out as and when I make adjustments.
I consider myself lucky that I don't have to worry about the fast guys, so I just concentrate on my race, as I said before they are just markers to how successful I am at my task of circulating as fast as I can.
There is always that psychological constraint that you think you have to have alien speed before you can talk or do setups, and yes to some slight degree I can see that and have seen that. Assuming such a thing as a perfect setup exists, the slowest driver can have the best setup.
if you want a far more specific understanding then I am not your man, so many people in race department are Sooooo much better than me. I am more your Joe soap setup man.
I am sure that if an alien driver was to take our setup he would not have the same experiences at all, saying there is no problem. But as I am joe soap, then the setup I make for me are relevant.
I really apologise for the waffle.