Thrustmaster Ferrari GT Experience Wheel?

[モンスターマット]

I have a Thrustmaster ferrari gt experience USB wheel (also for use with PS3)
When plugging the wheel into my PC and applying configuration to AC the wheel and pedals check out.. but in game the wheel's sensitivity is way too high.
I move the wheel an inch either side and the in-game wheel move the whole 90 degrees rotation.

I am new to Assetto Corsa, and am not sure which setting it is to change the wheels sensitivity so thought I'd ask here.
Thanks - Monster.


Wheel:
http://images.flightstore.co.uk/images/products/zoom/1334778657-93347700.jpg

[quf]

Your physical wheel does 90º to each side? Then in the game controls under steering axis adjust the steering degrees to 180º. This is to have correct steering ratio between game and your physical wheel. Now about the animation of the steering wheel to match your wheel, go in video options-view, and at the bottom put 90º virtual degrees.