Re: Recommendations for PS3 steering wheel please
My first suggestion is to download the free demos of Motorstorm, Dirt, NFS: Pro Street, F1 Championship, Stuntman: Ignition, Juiced 2: Hot Import Nights, MX vs. ATV Unleashed, Toy Home, PixelJunk Racers, and any other available racing game and see which ones you like best.

If you're like me, the progression is:
1. Buy a PS3 as a BD deck.
2. Download a zillion free demo games just for the heck of it.
3. Get into the habit of playing.
4. Buy games.
Dirt is excellent and has a lot of variety, but I think it's pretty similar to Sega Rally Revo. Motorstorm is fun too, and the price is starting to drop (I think I paid $20 for it used at GameStop when they had a special a couple of months back). MX vs. ATV has good gameplay, but the graphics are nowhere near as good as most of the other games. I haven't played NASCAR 08, but I've heard mixed things about it. If you like F1 racing, then you should definitely consider that one too.
Also, if you've ever wanted to be the star of a John Woo movie, you should get Stranglehold.