Find line below in controller.ini file in "UserData/"yourname" " and change to rotation you have your wheel set to in wheel control panel, ie. mine is set at 540.
Steering Wheel Range="540" // Degrees of rotation of in-game steering wheel
PS. when you setup your controls ingame, save them as something that you remember in ingame controller setup window, then make any changes to that file out of game, it's found in "UserData/controller", and save, eg, personal ff settings, wheel rotation etc., then delete every other ini file, except the one you've just saved, from "userdata/controller", that way the game will alway pick up your personal settings at start because any changes made ingame after that will reset most of the settings you make out of game in controller.ini that sits in UserData/"yourname" folder