I meant to post my dfgt settings yesterday but I got sidetracked. Here they are and hopefully it helps you with your wheel:
steering deadzone : 0%
steering saturation: 75%
steering linearity: 50%
throttle deadzone: 0%
throttle saturation: 100%
brake deadzone: 0%
brake saturation: 100%
I also have the feedback on and everything is at 100% there. My next race is at Hungary actually so I'll edit this post after I see what my lap times are, just for comparisions sake.
edit: actually I am at Istanbul right now. After Monza it's my favorite track in the game.