I use 2 different settings, the classic cars, the touring and dtm 1992 I set to 30, the newer cars such as the gtr3, gtr2 or the adac I set in the area of 22-25. It is a trade off of being able to turn sharp for the corner and not having the car too twitchy to drive on the rest of the course... again, as always, ymmv
hth
rich