Casual drivers who never set the difficulty level past "Normal" and never set the transmission to "Manual," but still enjoy a good race and perhaps want more control and accuracy... If that sort of casual racing sim fanatic sounds like you, the Microsoft Xbox 360 Wireless Speed Wheel merits checking...

Despite the argument over the peripheral's necessity, the device does work accurately and as advertised. The real question is whether or not you want to hold the wheel in the air for the duration of an endurance race.

The Wireless Speed Wheel is marred by a couple of bad design decisions, and the effort of holding it in racing position can make longer racing sessions tiring. Yet it’s accurate and responsive, and it does make playing Forza 4 – and other racers – a more exciting and immersive experience.

It's not a steering wheel replacement, and it's not really trying to be... And air steering, much like air guitar, proves to be pretty fun.

Your mileage may vary, but if you want to race for real in Forza 4 and still be able to afford rent, get on the secondary market and track down a Microsoft Force Feedback wheel in good shape.