In my Escort i would run about 50 to 55 hot for a short autocross, about 45 to 50 for long ones, for open track events i would run about 45 hot front and 35 hot rear. Each car/tyre/driver is going to be different.
So it sounds like the contour might tend to push a lot in the corners, just like my escort did, thats why i ran so much pressure in the escort.
