PC1 How to increase bumping/vibration?

[RacingJustForFun]

Hello, in using the Thrustmaster Force Feedback Wheel Ferrari F430 I feel almost no bumping and vibration when hitting something with the car and also almost no vibration/bumping when I come offtrack.

HOW can that be changed?

 

[Jeffry in t Veld]

This is a good video on how to get the best FFB: