I went with the 25 mm version, my preferred width, and on my 17c rims, they come out to roughly 27 mm wide. This size offers top comfort with very low rolling resistance, perfect for Road riding. I also weighed the tyres and they come in a 254 g a piece. One thing that I was really impressed with, was how easy it was to mount it. Often, other tyres require that you use a tyre lever to the last bit over the rim, but I really hate doing this on my carbon wheels. With the Corsa G+ Control, I didn’t have to do a thing, expect push them on. A relief in a world of tight Road tyres.