I finally took the plunge and picked up a set of 17" wheels from a fellow inmate. I've read tons of threads but after about 50 miles of riding I've found opposite of what all of them state. I'm hoping some one can explain what I'm describing. I was very happy with the stock 21 / 18 setup. My only disappointment was the lack of street tire choice. I really wanted one setup for dirt and another for street. I took a trip to the Tail of the Dragon with the stock set up and had no issues. The bike cornered great, handled wonderfully and was a pleasure to ride. I guess all I'm trying to say is I'm no stanger to how the bike rolls from one corner into the next. I installed the 17/17 setup and took it for a ride. I'm finding the bike more difficult to turn in. All of the threads suggested that this setup is suppossed to turn in quicker and twitchier. I'm feeling the exact opposite. I really need to lean into it and make it happen. I've used my local Home depot parking lot to do slalom type drills. It takes more steering input to do the exact same exercise. Maybe I'm just comfortable with the stock setup but this seems slower, or more deliberate. I didn't find any high speed instability, head shake or anything like that. I'm all ears .