Small Karts:
Small Bikes:
Medium Karts:
Medium Bikes:
Large Karts:
Large Bikes:
Hope that helps :)
For the karts the Wild Wing. For the bikes the Mach Bike.
That's completely opinion based.
Karts go faster, but bikes can wheelie for more speed.
You have to complete certain cups, and do certain trials but you can only get them on single player!
To get 36 karts on "Mario Kart DS", you have to come in first on every race and cup.
To get Rosalina, you have to have a New Super Mario Galaxy save file. Also, you have to beat time trials to unlock certain characters and bikes.
This is an interesting question. I really think what you're trying to say is What are the cars in Mario Kart Wii. There are a lot of cars, but they are all grouped based on size. For example, the small characters have small karts and bikes, the medium characters have medium karts and bikes, and the large characters have large karts and bikes. I hope this answered your question, but just in case it didnt, the main kart in the game is the Standard Kart, and the main bike is the Standard Bike. Have a super day!
Loads!
By Beating cups
Actually, Baby Mario has 6 karts (if you can unlock them) in Mario Kart Wii. He has the Standard Kart S, Baby Booster, Concerto, Cheep Charger, Rally Romper, and Blue Falcon. For the 6 bikes, he has the Standard Bike S, Bullet Bike, Nanobike, Quacker, Magikruiser, and Bubble Bike.
When you hack the game.
COOL ones!