Here's mine:
Profiler:
Rotation:
1080°
Overall Strength of all forces: 60%
Constant: 100%
Periodic: 90%
Spring: 20%
Damper: 10%
Auto-Center Settings: by the game
In game:
Steering sensitivity: 0%
Steering non-linearity: about 20%
Force feedback gain: 100%
Force feedback centering: 100%
Haven't really tested many different setups but I like this one quite much.