Thank you @
CarCzar, in statement two do you mean that the game is programmed to only see (or process) 360 degrees even if the wheel can turn 900 degrees? And if this is the case, it divides 360 degress by the physical rotation of a wheel. (e.g. 360/900 = .4 degrees) So every one degree of turn on the wheel is only .4 degrees of turn in the game (which makes the wheel more precise? (Is it 360 degrees total or 360 degrees in either direction in the game)
And/or are you saying that after 360 physical degrees of rotation of a wheel (180 in either direction) nothing more is happening to the wheels of the car in the game?
Or are you saying that the sensitivity setting only changes how rapidly the game thinks you are turning (not how far). Isn't a steering wheel always going to be a slower turn than a controller since there is a lot less physical distance from one end to the other end of input on a controller than on a wheel. If this is the case, the only thing the setting is doing is making a controller with a rapid movement be applied slower in the game?? And slower input, which is smoother driving, I am told is better race technique, and, you are getting this naturally with a wheel already. Since it would be very hard to turn a wheel as quickly as flicking a stick the input of the wheel would never need to be slowed since it would not reach some threshold of speed of input. (I have never used a controller in GT).
After having worked through developing my question, and worked through your answer up to this point, it just occurred to me that the front wheels of a car would never be able to turn a full circle, and actually they can't even probably turn a full 90 degrees (I have never seen a front tire turned perpendicular to the car -- except maybe after a wreck). So the tire is turning probably about 75 degrees maximum?? So this again needs to divided into the game and then into the wheel... So where does this leave us with the sensitivity setting??
I'll take a stab at this. 75 actual wheel turn divided by 360 = .208 divided by 900 = no this seems wrong... 75 /900 = .083 , that's less than one/tenth a degree of car wheel turn for one degree of turn of the steering wheel. 75 /840 = .089 not much more. I wonder how precise an actual racing car steering wheel is when turning the wheel on the racing car. Here I think I am talking about gear ratio in the steering gear box, and, upon reflection, not what the game would be referring to as steering sensitivity, because in real life there isn't any such thing as exponential in a steering gear box, right??
Also, what do you mean in statement one when you say it doesn't work with wheels, Do you mean that it has no effect (cause I seemed to feel a difference), or that it doesn't make things better in actual practice when using a wheel?
To make things more confusing, my wheel seems to have about 840 degrees of actual physical rotation, 360 + 360 + about a third more. It seems to be short about 60 degrees.
Now that I see how small of changes of degrees we are talking about, maybe the only question is if the sensitivity setting makes the turn more or less exponential (which you already said in your answer, but I didn't really get until now), which might boil down to how far you have to crank the wheel at the end of your turning, So it would be about the same in slight to average turning, but when having to turn more (which is probably bad racing technique) you would have to turn less to get more extra turning. So leaving it at zero makes for better racing technique because it makes it harder to over turn????
Also, in actual practice, I am almost never turning my wheel 90 degrees in one direction, except in hairpin turns, like the final s turn at SPA, which would be only about 8 degrees of actual tire turn if I am right about the relationship of 840 degrees to 75 degrees in the car. And, normally I am only turning about half that for most corners which is about 40 degrees on my wheel, which would only be about 3 to 4 degrees on the car tire - can this be right?
If this is about right, then the differences are so small, that it only really boils down to how it feels and performs as one practices and races. Again, do any of you drivers with long experience and highly competitive results really alter this setting in different situations or is it inconsequential. (I know @
CarCzar you said you leave it at zero, thanks again)
This brings up another question. Do all the cars in GT6 have the same turning ratio to your input, or is it different for different cars?
,lol 
Also, on SPA, with my brake balance at 3 and 7 (or 8) in combination with my newly cranked steering sensitivity, it did seem that suddenly my normal braking points and breaking amount was resulting in more back end braking away on certain sweepers and the last, tight, right-hand turn (the one where you brake hard and shift from 4th to 3rd) before going to the tricky semi-tight right-hand turn onto the long back sweeper. It also seemed that I had to be just a tad more careful about getting on the gas through this tricky 2nd turn which is critical because it leads to such a long straight, plus I have been told a number of times now that exit speed itself is critical. Maybe it hurt my full acceleration point because my wheel was turned more than I realized as I was winding and unwinding it through this turn.
