try my setup;
ride hight -14/8
spring rate 18/12.7
dampers 4/4
dampers (comp) 4/4
anit roll 3/3
camber 1.0/1.0
toe 0/2.0
downforce 24/48
lsd 10/40/20
brake 5/4
transmission i have to top out at 193. i adjust it according to track
racing soft tires.
all aids off.
not super awesome but a hell of a difference.
hope this helps
try my setup;
ride hight -14/8
i found these also.
http://www.gtvault.com/gt4/setup-view/s_sid::7858/BMW-M3-GTR/
http://www.gtvault.com/gt4/setup-view/s_sid::3238/BMW-M3-GTR-Race-Car/
i used these as a base and tweaked them to my likings.
The guy was requesting a M3 GTR 03 tune, the first tune listed is for a M3 GTR Race Car. Only race cars have adjustable front downforce.