You need to go to the grand prix and beat the 50cc, 100cc, 150cc, and once you beat 150cc you unlock 150cc MIRROR beat all of those and get gold trophies on all of them you will get all karts, characters including the secret character ROB. GOOD LUCK!
You get one part per 50 coins
win 150cc to unlock
you unlock more karts as you go along. each character has 3 karts. when you finish the game, with gold on every cup in 50cc, 100cc, and 150cc, you unlock all the characters and every one can use every kart. (even other characters karts). so, when you finish a cup with gold and then it says you unlocked all the karts clapclap for you!
Go-Karts Plus's motto is 'Action Park of Williamsburg'.
It is totally stupid to ride karts anywhere without a helmet, legal or not.
Just beat all the grand prix cups and youll unlock all the karts and for all 36 karts beat ALL the mirror mode cups
you have to complete certain things to unlock stuff. this website shows you how to unlock everything, including karts. http://www.videogamesblogger.com/2008/04/18/how-to-unlock-all-mario-kart-wii-secret-characters-bikes-karts-and-more-guide.htm
Unlocking karts is really simple! To unlock, win a series of all the cups on 50cc and you may even unlock some characters along the way. Also, you can go on different cc's and race and get stars on all of them and you'd unlock them for sure. Also, on time triles, get very good times and unlock fast staff ghosts for karts.
Get gold trophy in grand prixs to unlock karts and characters.
You beat all the mirror mode cups.
Loads!
You get one part per 50 coins
win 150cc to unlock
COOL ones!
To unlock karts and characters, you can get them by doing Grand Prixs or Time Trials, or winning lots of wifi races. Or, you can simply play the game alot.
You have to complete certain cups, and do certain trials but you can only get them on single player!
You can unlock the karts in any order so they are all here: Large Karts: Piranha Prowler - Win 50cc Special Cup Dragonetti - Win 150cc Lightning Cup Aero Glider - Win all gold medals in 150cc Cups