There are numerous reviews about how poor the RS10s are in quality. I've had two spokes break on the rear wheel within two weeks, one of which was on a century ride. Luckily it stayed true enough that I could finish the ride. I replaced the RS10s (still on warranty at the time) for the RS20s. The RS20s are a much better ride and hold up so much better. I've had zero problems with them. I wouldn't use the RS10s again if someone gave them to me for free, even as a training wheel.