I got a Thrustmaster RW Ferrari racing wheel red legend edition, i tried playing beamNG with it but the cas and brake pedal were mixed up, so I had to put the gas to the brake and the brake to the gas. Not only that, the gas and brake pedal were both continuously held down, I was not touching them and they were in normal position but in the game they were both 20% held down. I pressed the gas, but the brake was still on, I floored the gas and the brake went off, but having to floor the gas is like still having a keyboard, right?
I have the same wheel, I also had the same problem. The fix is very simple, you just have to invert the input. The picture should make it simple enough if you don't already know how.