i find every car has a differant feel... a Rear wheel dreive car i use 7... Front wheel it use 4.... for FGT & X2010 i use -1. test each car. if you havnt noticed each car savesthe settings you use... i.e traction control, skid recovery...ect. everytime you get it a car you need to change the setting you would like the car to have & it remembers it for that car