|Tubeless and meant to be.|
The USH was vastly better tubeless, but the tire leaked down a lot, and I wasn't 100% confident in the fit on the rim, being very afraid to raise the pressures above 45psi for fear of blowing them off. That pressure, as it turns out, wasn't high enough to handle me on gravel roads. So, I abandoned the whole deal, and since the USH was a wholly different tire in a worse way with tubes, I never rode them again.
|The silver A-23's make the BMC look more classy than ever.|
Using the same A-23 rims- as in the exact same ones as I had in 2012- I was able to set up both tires tubeless from the beginning to the end of the process in a half an hour. Compare that to the hours and hours of work and trial and error to get those USH tires to go tubeless and it becomes evident that a specific design for tubeless makes a world of difference here.
Plus, I can run higher pressures since the tire fits better and has an actual tubeless bead that can handle the stresses of being set up tubeless. The sole barrier against you having a great ride or having the tire blow off the rim catastrophically and causing you to biff yourself spectacularly is the bead of the tire and how it fits the rim. And things could go really bad if it were only a folding bead tire like the USH I tried. A real tubeless design? That's peace of mind right there, that's what that is! Now I can have a decent pressure for me and my style of riding. That's important.
One more thing to add, and that is that these are, (hopefully they rectified this), compatible with sealant. The old, folding bead Clements were not getting along with sealants at all. Delaminated casings were the main cause for concern here, but blistering was also noted by some riders. So, say what you will about converting tires that are folding bead, non-tubeless design to tubeless. I ain't listening to that clap-trap. Not when you don't have to do that dance anymore. Now that several tubeless tires from 32mm-42mm tires exist, there is no need to convert something that was never meant to be converted.