I have to disagree with Red. I have a 200 on the rear of my 06 street glide. It rides better than the 01 fatboy I had with a 160 (i think that is what it had). I will agree that there is a sweet spot though. The 280's and 300's are way to wide. I don't think that little bit of a change will be that bad. I had a GSXR 750 and went one size up on the rear and liked it. But it depends on your ridding style.