Where can I get response curves

I have just got a Thrustmaster T150 PRO but the force feedback seems to kick in at around 5mph and by 8mph it is at the same level it is at 70. Where can I get a response curve (the help section only shows where to add it and has no information on where to get one from)?

 

You need to create a response curve yourself by running a small program called wheelcheck.exe . If you do a search on it you will find little tutorials because they are also used for other sims.