I've got a Logitech Driving Force Pro, the "GT4" wheel, with 900 degrees rotation. It works perfectly on the PC, and the force-feedback is awesome. For the £90 I paid for it, it is brilliant.
Of course, there are much better wheels/pedals, but then you start getting up towards $300 and way above, however if you are really serious about driving games, then they are well worth the extra.
However, for the arcadey racer that is NFS:U2, then almost any wheel will be fine, however I still recommend one with force-feedback 🙂