I'd assume a USB steering wheel would work fine since it is just like a joystick in that it uses potentiometers and buttons.. just organized differently. As long as it's
USB HID. I'm fairly confident that all USB HID devices will work.. that's the beauty of standards. (The other beauty is that there are so many to choose from ;-) ) We have a USB steering wheel but haven't hand the chance to see if it works.