I've noticed that the worse your rank the better the item (it's fair I guess). However if I hit a ? box when I'm 10th and by the time the roll is done I'm 4th, will the item still be randomized as if I was 10th or will it take into account my new position ?
In other word : does passing other players lower the power of an item that is still randomizing (rolling), or is the roll already decided when I hit the ? box ?
Best Answer
It's decided when you hit the box.
Therefore, you can hit the item button to get the item earlier without affecting what you will get. The only reason I can think of not to press the item button is if you're afraid to overdo it and spam the item by accident.
Unfortunately, I could not find a source for this. The most efficient way for you to test it by yourself (by passing large groups of players) is to use a lightning before a set of itemboxes when being close to group of racers. You could also use a star before a set of itemboxes, then take a shortcut.