We have Rolfs on our Co-Mo Roadster. They came with the bike we got used. Previous owner had less than 100 miles. We have over 1500 on them. We have not experienced any problems. The wheels are still true and are fine. If we do not have any problems I plan on having them inspected after 2500 just to see if all is still good. I have considered getting another wheelset for daily riding and saving the Rolf's for special needs rides but for now they are all we have. The bike weighs approx. 34 lbs with nothing extra on it, add about 4 lbs for the back rack and bag. We are a 300 lb team.