It's the chain you have to worry about. you might end up shaving some of the side of the tire off to clear it. unless you go to a 520 conversion then it may clear the tire no problem but don't hold me to it!! but remember the more tire you have, the heavier. so it can slow it down some with all that centrifugal force spinnin. so in my opinion stick with a 190 unless you just wanna look cool and tell people " i have a 200 back tire"