I know some of the rules.Are there any specific things you need to do to get 3 star rating? I have a few 2 star ratings, but wasn't sure how I could do any better to attain a 3 star rating.
Basically in each race, there are secret 'missions' so to speak that you must do.
You need to win every race. You need to have decent lap times. You can't get hit by items (I think you are allowed one or two, including blue shells) avoid POW blocks when possible, do tricks when you can, stay on the track.
I've done it twice, as stated, but I can't do it again. It's pissing me off bad.
But 3 star rating gives you nothing, except bragging rights.