jmikami

I do not. I use them until I see the tread is mostly gone in small parts or there is damage, but rarely do I wait until failure ... that could be far more costly than replacing them early. Especially on the track, but even for clinchers on the road.

Racing on end of life tubulars is not a fun way to end a season.

How much life did you get from the crono cs? I just bought two of those to replace mine and I am curious what you got. I will be racing at Alpenrose and Marymoor, so not the smoothest of tracks.