I was doing a Seasonal Race 650PP Nurburgring B-Spec race, in 1st attempt i used totally balanced suspension settings finished 1st, but i got 1st only in last straight. Now i stiffened overall suspension, both extension and compression 5 but front suspension made a little softer, i got up to better positions faster and got 1st in the beginning of second lap because I had upper hand in corners and speed was phenomenal with Corvette Z06 (C6) Racing Modified.
So assume if you have much grip on tires you can make your ride stiffer, so it doesn't shake so much because of loose wobbly suspension and doesn't kick car out of control and make front softer so it leads the car by compressing, not that its same in back and front and drives like a box. But why usually default suspension settings have front stiffer than back? Can anyone tell me how really suspension works using parameters of GT5.
Edit :
Okay, i figured it out, basically what i said before. Compression and Extension works as resistors, they slow down springs so they are not wobbly, by default most cars have stiffer front so car understeers, rather than oversteers since it's made for street use, and not for hard-core turning and racing use. And basically you have to make grip of wheels and tarmac or whatever terrain you are driving work with suspension, so they work as one. And Ford GT has steering issues because it's very wide. Thanks everyone for support!