Does anyone play Rigs Of Rods? I need help wit wheel faces. If I download a wheel face for example "http://forum.rigsofrods.com/index.php?topic=4335.0" (scroll down) and find a vehicle's material file, rename the ".dds" to ".png", and the paste the wheel face in the trucks folder, rename it the name of the vehicle, EX: yelloejeepwheelface

It doesnt work, what did I do wrong?