You'll love it or hate it. I love it!
I read mixed reviews about the Wii Wheel attachment before Mario Kart was released and decided to just try it for myself. I found it to be very easy to use but, more importantly, I just found it to be tons of fun! So fun in fact that I haven't even tried any other control scheme.

Some people complain that the Wii Wheel isn't very accurate. I disagree. Within a week and a half of buying Mario Kart I had already gotten first place in every cup in 50cc, 100cc, and even 150cc. It might take a little bit to get used to but it's plenty accurate.

I think most people that play Mario Kart will have a strong opinion about the Wii Wheel, positive or negative. The game comes with one Wii Wheel so just give it a try first. If it's not your thing then don't use it. Personally I found that it immerses you in the game and takes the fun level up several notches. I wasn't even looking forward to buying Mario Kart but once I played it with the Wii Wheel I just can't stop playing it. I haven't enjoyed a video game this much in years. And I directly attribute that to the Wii Wheel.

Can't bring myself to keep using it.
My 10 y.o. son and I have been ripping through Mario Kart Wii and love it. I bought the game and this extra controller having high hopes. I must say that after a week of playing MKW with and without the Wii Wheel, far and away we both keep going back to the wiimote and nunchuk combo. I come home from work and the boy is playing and I ask him why he is not using the wheel. He replies that it works ok, but the wiimote works better. He is not known in this house for really giving things a good try and run something through its paces. So being the dad I am and that I spent the money on the extra one. We played each evening when I got home for work and every day he kept wanting to go back to the wiimote. I too broke down and stopped using the wheel. I am not sure why I do not like it just yet. Perhaps it is the poor ergonomics. maybe the familiar comfort of the mote and nunchuk combo, I am not sure. Maybe it is just the game and with another racing game it would be great. Regardless, be warry of it. Do not buy this extra wii wheel just because you got the game and both people want to play. Try out the wheel that comes with the game and see if you like it. If you do try the mote and nunchuk combo and see which you like best. Your mileage may vary.

Great wheel compared to others.
This wheel is a designed great. Compared to other wheels, that make access to the B button very difficult, this wheel is very easy to use. It is pretty accurate in the steering aspect. I would recommend this wheel to anyone that likes using a wheel for Mario Kart Wii.

wii did play!
i thought that these wheels would somehow inhibit the repone time somehow but they did't. they worked just fine. i bought three additional wheels for my kids and they are wonderful. i can't wait to try them with other racing games that are set to come out. reasonably priced and sturdy too. worth it.

Great if you enjoy mario kart motion control
The game, Mario Kart Wii, comes with one wheel. You have the option of using motion control(with or without wheel), numchuck + wii remote, or wii gamecube controller. The best piece of advice I can give someone is to try the motion controls on mario kart with the wheel provided with the game before you consider buying a second one. You will either love or hate the motion controls on this game so you should figure out what control configuration works best for you and those that live with you before making the decision to buy a second wheel. For instance, this game is played primarily by my girlfriend and myself. She prefers joystick control over motion control, so personally it would not make sense to spend the money for a second wheel.

If your game didn't come with a wheel for whatever reason (used game purchase, etc.) read the rest of my review below....

My review of the wheel itself.
Build - seems to be pretty high quality, very sturdy and wii remote fits in the wheel pretty well. Higher quality build then the wii zapper. It is also a lot more comfortable to hold the wheel then using motion control without a wheel.(you can't use the wheel without motion control so again make sure you like the motion control first)

Controls - The wheel is designed so that you have have very easy access to any of the buttons on the controller. It will work well for other wii motion racing games such as "excite trucks". The only thing that sometimes bothers me is that the B button in the back is pretty big, so sometimes you may accidentally hit the B button when setting the wheel down on a table. However, having the large B button on the wheel works well as far as game play goes.

In the end, this product is a must buy if there is more then 1 person in your house that enjoys mario kart motion controls, or you would like to have a wheel for one of your other wii racing games.