My wheel is showing a different angle than the in-game wheel. What is wrong?

Every car in every game can have a different steering angle. Some games send commands to the Wheel Base in order to dynamically match your physical steering wheel angle to the one of the car in-game. You will need to have the ‘Sensitivity’ setting (in the tuning menu) set to ‘Auto’. Once this is done, you will have to re-calibrate the controller in the game. 

As every game is different, some will require you to manually set the steering angle in the options menu. For example, in Assetto Corsa or Assetto Corsa Competizione, you will need to set the degrees in game and then apply the same setting in the tuning menu. In Dirt Rally and Dirt Rally 2.0 for example, you will need to perform the calibration in game, then set the saturation to 63 and set the sensitivity in the tuning menu to 900 degrees in order to get the exact steering lock of the car in-game.  

Recommended Game Settings can be found here: https://forum.fanatec.com/categories 
(Racing Simulations / Racing Games -> Fanatec Recommended Settings)

In case the steering angles are still not matching, please try check the following: 

1. Turn your steering wheel at 90 degrees. 
2. Open the tuning menu and go to the ‘Sensitivity’ setting 
3. Start reducing the sensitivity setting until the in-game steering wheel starts to match that of your steering wheel. Turn the wheel left and right, and check that it is now matching with the in-game steering wheel.  

Some games may not have a realistic steering wheel animation, and will therefore be impossible to match with your steering wheel.