As far as I'm limited with QTS (I haven't finished A,B and C events) I don't like the way GT-R goes at it's standard. To much understeer. It easily goes slideways and I can hardly catch the right braking point decelerating (when I release throttle and start braking).
I use 4WD 50-50, cuz at other layouts, like 40-60, 35-65, it still understeers entering the corner and has more oversteer at exit.
(hope you understand what i mean and sorry for my english)