Most of them I found all over the forums, did some tweaking to get this:
Steering deadzone 0
steering sensitivity 50
Throttle deadzone 6
throttle sensitivity 50
brake deadzone 6
brake sensitivity 35
clutch deadzone 6
clutch sensitivity 35
speed sensitivity 0
controller filter sens 0
damper sensitivity 0
force feedback 100
tire force 100
per wheel movement 0,00
per wheel movement square 0,00
wheel position smoothing 0,04
deadzone removal range 0,05
deadzone removal falloff 0,01
linkage scale 0,00
linkage stiffness 100
linkage damping 100
relative adjust gain 0,98
relative adjust bleed 0,10
relative adjust clamp 0,96
scoop knee 0,70
scoop reduction 0,25
soft clipping (half input) 0,00
soft clipping (full output) 0,00
Per car: Jack Spade settings.
Works like a charm, for me that is ...