Just wondered. Some guy is trying to do wet weather stuff for ICR2, and
says he can't do the physics. I would presume this is because Papy use
the FAR (Feels About Right) method, whereby they drive around and alter
the equations in the 3d engine to get it ok. However GP2 Editor 1.81
(and tons of previous versions) has a grip editor. Simply by altering
the values of tire grip the game reacts accordingly. Does GP2 use a
proper physics model? It would seem so from this.
Any thoughts welcome