go to the Mario Kart wii menu and click on any file so when you get to that place with gran prix click on it and when you click on it after the next screen comes up hold 2 1 b a and + then the whole screen turns white and it says dun dun dun so you get like the dolphan dasher and the phantom and all the cars.
it took me years to figure this out thanks for typing my question my e-mail is slipjohnathan@Verizon.net
you have to do time trial races to unlock characters/vehicles
win 150cc to unlock
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
In Mario Kart Wii, you can't actually download the ghost you need to unlock the ghost character.
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
you have to have gold in all the cups to unlock it :)
keep playing
you have to do time trial races to unlock characters/vehicles
to unlock dry bowser, you need to get a one star rank or better in all 150cc Wii cups (all the cups on the top)
to unlock everyone you have to play grand prix all classes and to unlock the rest you must do time trials it takes a while but its fun
win 150cc to unlock
all you have to do is get a gold medal in all the other races of all the other cups, then you should unlock mirror.
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.
i think you must beat 50cc with all gold if you do this you will also get King Boo
get 1st place in all the other races and i would recommend Yoshi to race with (just to unlock stuff though)
To get mirror cups in Mariokart Wii you willk have to complete all of the cups on all engune sizes