Thrustmaster T500RS wheel doesn't work in Mudrunner on PS4? I know the supported TM wheel is the T300. But games which support the T300 is usualy work with the T500RS too. Maybe not this time. Sorry for my bad english.
Did you try the trick with the PS4 controller pad? :
Quote: Have you gone into the options in-game (by using your PS4 controller until you get your wheel configured) and set up your wheel as the primary control device?
Seems that worked for most people on PS4 - good luck!