Well I just found this forum. I ride a DiamondBack Sorrento with city tires to supplement my jogging(16 years of it). I had a Giant road bike but it was just too nice to park anywhere unattended, also it didn't work very well on the sidewalk. So now I just ride and don't worry about it. We've also got a specialized crossroads hooked up to one of those magnetic machines in the exercise room. Drop a line, say howdy.