I have beat the normal racing mode, and am therefore done platinum. I thought this would unlock super excite, but it turns out you need to get S grades on all the races!

Is this impossible to do and how long did it take you?

Trust me, it isn't impossible to get all S grades to unlock Super Excite, because I have done it. The Canada levels are quite hard, same with the Scotland one on Gold I think but the rest you should manage no problem. It took me quite a while though but you should be able to do it in the end if you're good enough.

k thanks! I'm working on getting all S grades. I have S grades for bronze, and other random ones in silver, gold and platinum.

It took me a little while, it helps to just keep playing the same course over and over and keep trying new things, like shortcuts and paths and how to get the most points. I also try to do a lot of drifts, even on straight path. And don't be afraid to run off the path to get tree runs.

it will take a long time to do it i needed help from my friend because he did it already but then
i beat bsuper excite by my self

that wasnt so hard but on super excite im always one star short of S rank

This is possible I believe my friend Renkyu has all Bronze and Silver as S.

I beat it completely, as in all S ranks in Excite, Super Excite, Mirror, minigames, and super minigames. If you have any questions, you can just ask me.