@christos_Swc
Not using the vehicle set would be ideal if you only drove one vehicle type (F1, GT3, P1, etc.) and only one vehicle type, have a wheel that was intended to match only that type of vehicles wheel rotation and the wheel setup correctly. This is just one scenario
Manually adjusting the FFB per car would be ideal for said situation above as one team has more than one driver and other times where more than one person has to use that same rig and vehicle. This is just one of the uses.
If you check the vehicle set and use the default 1.00 multiplier, you will let rF2 do it's job. It cannot do what it is supposed to do if you are trying to do it's job for it. On the default setting (with a properly set up wheel) you will feel the difference in each and every car. You will feel the difference in each and every track that has a difference to feel. You will confidently control the car instead of hanging on. Each car will respond correctly and will do what your hands tell it to do.
Except FFB multi at 1 is too much for me.
Running DX11 without my plugins I have no way of knowing if I am clipping or not but, at least according to everyone else I have spoken too, I should be clipping and quite heavily at that.
So if this is how it's supposed to be working, and FFB multi 1 is supposed to give you the realistic weight of the car, maybe it's not working as intended.
And the moment you come in and take things over you might as well go the whole way and fix the steering to how you like to drive and you know actually works for you.
So I tried as you said and used "vehicle set" and gradually kept lowering the FFB multi.
Steering got lighter and lighter but it never gave me the sort of beautiful feedback I previously described, to the point of me thinking it was all just in my head.
So I went back to my own settings which cut the steering ratio by half and thankfully that feeling with the AMG was restored.
And it's beautiful.
Just for reference, try 220 degrees of wheel rotation and 0.35 FFB multi and maybe you will get that feeling too.
The moment the car goes into a perfect 4 wheel change of direction and the tires reach the absolute limit you can feel the steering suddenly get real light and that tells you all you need to know.
I used Nordschleife2 24H for my testing BTW and medium rubber.
Give it a go, I'm curious.
I know such fast wheel ratio leads to big driver errors so one needs to be really precise.
My philosophy is that if you want to run at the front then that's the sort of precision required for that and if you don't have it you get to suffer accordingly.