uh if you ordered the bigger size accidently i would recomend not using it and trading it for the right size. i have accidently ordered the wrong part while working on cars and you can usally send it back with in a certain time period if you don't use it.
I agree with swapping the tire. My Gixxer came with a 190 tire and I was MUCH happier when I went down to a 180. The bike handles so much better with the 180. I imagine the 200 would feel worse than the 190.