First, at this point in time, Logitech is not licensed by Microsoft to develop a force feedback steering wheel for Xbox 360 - only corded controllers. The DriveFX wheel is, effectively, an Xbox 360 controller that is shaped like a steering wheel and has a force feedback motor in place of the standard vibration motors.
Second, even if Logitech were licensed to make a force feedback wheel for Xbox 360, there are significant technical limitations which prevent these wheels from functioning on on Xbox 360. The Xbox 360 features controller and force feedback architectures (XID, device-based force feedback playback) that are significantly different from the way our wheels work on PC, PS2, or PS3 (HID, host-based force feedback playback). It is not possible to enable Xbox 360 functionality with a software or firmware update.
Logitech understands that our customers wish to use our steering wheels on multiple gaming platforms. We have made significant efforts to ensure that our PC wheel drivers support our PS2 wheels, and our PS2 force feedback SDK supports our PC wheels. PS3 games that support Logitech force feedback also support the same list of wheels. At this point in time, these are the only three platforms with which it is possible to have a single force feedback wheel be compatible. Were it possible to effect a firmware or software change to enable Xbox 360 compatibility with our existing wheels, we would do so. Unfortunately, however, until Logitech is licensed by Microsoft to design and manufacture force feedback wheels, no Logitech force feedback wheels will function on Xbox 360.