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.
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.
I have been using these for about 5 years, but have tried other brands as well. These are the best I have found for puncture resistance and overall durability. (cheaper tires, especially those of Chinese origin, seem to handle my considerable weight poorly, as I have had several catastrophic sidewall blowouts with such tires). On the rear, I have had these last as long as 4,000 miles, while the one currently on the front has just gone over 10,000 and seems to have some wear left yet. If you inspect your tires for imbedded glass after each ride, flats will become unusual events. While not especially heavy, these tires have high rolling resistance and so I don't imagine they are for everyone. But if you want to ride without having to stop to repair flats, try these.
The high thread count casing and wrap-around 'tread' make this a durable product. Its low mass and low rolling resistance, coupled with the relatively firm compliance (relative to, say, an old 'Strada 66' from yesteryear) have made this my choice for current and future ongoing front-tire shoes. As my front tires seem to last many times as long as my rears, and since I resolve that I am "worthy" of riding tubulars for esthetic reasons, I love these taking the lead on my training rides, long or short! (Though I no longer have the passion to race, I would still use these were I still "in the pack!"
They glue up securely, and I've not had a delamination nor a seam failure. Pumped up well-beyond what a lesser would tolerate, they seem incapable of puncture! (Knock on wood! That was stupid of me!) The 'black chilli' compound seems to be a solid advance in rubber technology, too, combining traction and durability in ways best described as "magic!"
"Let it roll; down the highway"!!
