They set up tubeless without much fuss on a wheelset with 19mm internal width. I have had two punctures in the past two months, but both punctures sealed with sealant while I was riding and I didn't even notice them until I got home. I ordered these tires in 35mm, and they blew up to 34mm on my rims. I have another set of wheels with 24mm internal width with some 32mm tires, and they measure the same 34mm width. This is a good width for me, as it allows me to run low pressure (~50psi) which isolates a lot of road roughness and also allows the tubeless system to work better.
I'm using Reserve Fillmore valves so I wasn't able to inject this stuff but I still used a sealant injector to get it into the tire without making a mess and it did not clog. I've already had a small puncture that sealed but it did take a while, it was close to the sidewall and I probably didn't have enough sealant in the tire to be honest. I didn't look at the recommended amount for the size tires I'm using so I should have added 15-20ml more. Assuming this stuff lasts at least a few months and the fiber foam stays suspended in the sealant rather than gathering along the tire bead making it less effective then I will buy it again. It is expensive but so far so good and it is a vast improvement over the original stuff as far as usability goes.
Hard to tell with just a few rides on these. I am using them with TPU tubes, 170 lb rider at 30 PSI. No issues so far. Ride quality is good although it feels like I can go even lower with the pressure. Bought to go a bit wider (went from 40's that measured 36 to these (45) that measure 44). I was looking for some more stability in some looser conditions, especially sandy shoulders, and to give a bit more grip when cornering (old tires were basically slicks with no side grippers.
Promoted as faster due to tread which creates wind vortices...per wind tunnel testing, and the faster you go (or the higher the windspeed), the greater the effect. Hard to say as I'm a 73 yo "never was," but it sure feels that way (possibly placebo effect). The 26 mm measures 26, narrower than I'm accustomed to, so higher pressure and a bit harsher on crappy chip-seal. Only complain was they were hard to mount tubeless on my Roval Rapide CLX II (21mm internal); couldn't seat beads even with compressor. Had to put in a tube for several days, and lost a lot of sealant around the edges before they finally sealed...to the point I didn't have enough to seal a tiny puncture on my 4th or 5th ride with it. My bad, but after first check, it was still hard to seat beads (and lost more sealant), so afraid to take core out again. Since then, all seems well.
