clarry: How much would you be willing to pay for a good wheel? And would you ever consider a "basic" [e.g. no force feedback and possibly limited too, say, 360 degrees?] wheel if it were cheap enough but well built -- as in sturdy and reliable?
I contemplate buying a wheel, but the "consumer level" is dominated by Logitech [followed by Thrustmaster] with a wheel that is both way too expensive for what it is (imho; it's just a pile of plastic with two cheap wimpy brushed motors, an encoder, a few buttons, usb interface...) and at the same time lacking in features and quality. I almost caved in and bought one but then I got to try one at a local store and wow, that thing really feels like a shitty cheap toy. AIUI the Thrustmaster offering isn't that much better, you just make different tradeoffs.
Starting today, I'm out of a job. For a long time now, I've been considering making a startup. Also, for a long time now, I've been considering making my own wheel... 1+1? I firmly believe it's possible, and not even that difficult, to make a wheel that's both better and cheaper than the Logitech offering. At the same time, I think there are lots of people who would fall into love with racing games even with a much cheaper "basic" wheel that still gives you a significant precision & speed advantage over a gamepad (actually such wheels do/did exist but they're a bit too cheap, basically toys that go out of calibration and can't take any abuse and probably lack the buttons you need to interact with your game). I think it should be possible to offer that in the price range of the official playstation gamepads.
My last wheel was a Fanatec Porsche Wheel (see attachement) which costed me new 300 euro 3 years ago, I sold it last week for less than half that.
It's in the same pricerange as a Logitech G27 but has better pedals and force feedback whereas the G27 has better production values. I also had a DFGT but it broke after less than a year and I even consider it better than the cheapo Thrustmaster wheels which are godawful IMO.
After a while I didn't use my wheel anymore because of the continued rebuilding of my desk and my seat postion wasn't good so I needed to lift my left foot so it doesn't rest on the clutch/brake, which gave me stomachache.
Unless you go for a setup where you can sit like you're in a car I wouldn't even consider buying a wheel and happily stick with the gamepad.
Since there are enough enthausiast willing to pay a lot of money for wheels+pedals these things cost a lot (new), even Fanatec ditched their relative low budget stuff and now the cheapest set will cost you over 1k euro.
Logitech's new wheels look nice though.
As for DIY wheel, do you have an example or tutorial? Because building a force feedback wheel is already quite challenging but you also need to have software to hook it up to the computer, maybe you could use Logitech/Thrusmaster/Fanatec drivers by using a donor wheel.
clarry: I got Richard Burns Rally this year and it's amazing. But I don't have a wheel. I try playing with a gamepad, but frankly it's quite hard. Even though you can adjust the input response curve and everything in RBR, I still can't find a setup where a gamepad's stick is precise enough for small adjustments at high speed and at the same time fast enough for tight cornering... and in such a game, even very small mistakes can end up very costly.
Sounds like you're putting too much torque on the wheels and need to ease on the throttle so the car will be less nervous when making steering inputs.