I don't think there are any hidden driving aids in the car physics files, boris. I've turned off everything I have found.
I get what you say phil. I don't know what it is that makes the car almost tankslapper free. How it is so effortless to drive out of corners. How it stops so well. I get it there is something wrong with how well the car rotates. The inertias are there and they are big. It has mass. Mental front weight distribution. Huge wide tires all around. Relatively neutral aero in the sense the car basically makes 0 lift. But it has lift on front axle and downforce in the rear. And high cog of pretty much half metres. 0.48m Iirc.
The way inertias work in ac is that you just try to create a box that matches the dimensions the car. Then make the box longer if the cog is far away from the geometric center. For example a 4 metre long porsche would have inertia of something like x,y,4.5 meaning its yaw (and pitch) inertia is bigger than the car dimensions would produce. The jag length is 4.8metres. The inertia for the box is 5.2. I have not calculated the reverse of the 3 dimensional box kunos uses so I could use the inertias I've calculated for the jag. Maybe I should do that. But I don't think the problem is there. The tires have inertias and weight as well. Those are probably the heaviest parts in any ac apart from the race truck.
I'm thinking the dampers need more work. But also in the tires there could be something that makes the super wide tires handle too well. But I don't know what it is. The tires are not easier than the kunos tires. The xmu, load sensitiveness, camber gains. All those are very close to the 312t tires that I used as a base. Same make (dunlop), same construction (biasply) and same era. I've tried 90s slicks. The car handles even better. I tried the grpA tires from m3. Handles really really well.. On the first version of the car I made a mix of those 3. I did try contacting the historix guys too but their response was pretty much they don't want the car (I basically offered the model in exchange for help with the tires). I tried contacting the historix physics guy but he did not respond.
I won't just start changing things randomly to make the car drive harder. I want to understand what is wrong. This is the best I can at the moment.