Thanks for summing up 
One thing Roval wheels are hookedâŚ
When you quote it like that it sounds more to me like theyâre shady types hanging around on street corners.
I am not servicing my private jet.
Itâs a bike and I should be able to safely change the tyre on the road, at home, or on my cycling trip without being worried about shit happening while going 80km/h down a descent.
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Of course notâŚ.but that doesnât mean he did it correctly.
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I donât see how that quote would make them sound like criminals. Itâs a fact that the typical bike shop employee is typically younger and lower paid. They usually donât have extensive training. Of course, there are exceptions but they are rare IME and hard to find.
There is no real advantage to go hookless for consumer. I had top brands hookless wheels (Zipp FC, Eaves) and ended up selling them all. Not worth the risk and no reason for hookless to exist except cheaper manufacturing cost = cost less.
No real tested and proven advantage in aero gains either.
My bad - I guess I forgot to include the < joke > tags.
Eh. Iâm just going off of something I read by Sheldon Brown years ago, but my understanding is that psi numbers are made up by lawyers, NOT engineers or even bike people. The goal isnt safety or even performance as much as, how can we not get sued.
Sone info on ENVE blow off and bead stretching testing in this 3.5 year old article:
I switched to tubeless 6 years ago. Things are much better now. January 2018 was my first experience with bead stretching and tire blowoff, on a tire rated for road tubeless and on a hooked rim.
That is factually incorrectâŚâŚ
Feel free to Google the CPSC requirements.
Interesting article. Yea 140psi in a 32mm tire is a lot, Iâd expect that to blow 
.
I also agree with their stance that hooks arent needed if tire/rim measurements are consistent and standardized. Indonât think thatâs exactly necessary though. I get they measure and say some tires work with their rims and some dont. But againâŚthis is where adjusting with rim tape comes in.
Tubeless tires are like pretty much every other component of a bike. Itâs needs to be put on, and then adjusted. You cant just bolt on a derailleur or fork and say youâre done. You need to properly set it up by trial and error until itâs dialed in. I dont see why some have a different expectation for tubeless.
Adjusting a derailleur is not the same as adjusting your rim tape (which basically means replacing it) every time you put a new tyre on. Rim tape is something that I expect to last for many years and not have to think about. So yes, if the message people are taking from this is that itâs on them to fine tune their rim tape to get the right fit for individual tyres then I agree I would run a mile from hookless. But that seems to only be an Extralite thing. Zipp and Cadex wheels arrive pre taped and there is no suggestion you will have to adjust this tape (though they do have instructions on replacing it). Not sure if Enve come pre taped but if not they arrive with Enve tape and instructions and again thereâs no implication you need to ever adjust once installed properly.
Still not really seen any stories of people using compatible tyres at <72psi on Zipp, Cadex or Enve wheels and having issues. And given there must be tens of thousands of those wheels now in use, theyâre being used on the WorldTour by teams like Jayco Alula, UAE and Movistar, and those companies all offer very good 5 year to lifetime warranties youâd think if there was an issue thereâd be more stories out there.
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Iâm experiencing deja vu.
Thank you for that.
In the embedded video, the Enve engineer says multiple times that they test to ensure the tire doesnât blow off until at least 1.5 times the max pressure of the rim or tire (whichever is lower). Just like I said they should.
But then they drop this bomb in the article 
ETRTO specifies a huge number of constraints for rim manufacturers, but not tire manufacturers. In the interest of consumer safety (and, of course, limiting liability), ENVE tests as many tires as they can get their hands on, to ensure that theyâll stay safely mounted to their rims. They shared the results with us, and we were shocked to see a huge variability in both tire bead diameter and stiffness. Weâll share data as we get it, but take our word for now that tires are far from created equal.
Holy 
!!!
How does (did?) the European Tyre and Rim Technical Organization not have standards for the two most important factors in tire safety, which are keeping the tire on the rim.
Itâs worse than I thought. Thatâs beyond shameful.
FWIW that article is 3.5 years old, and off the top of my head I donât know if the standards have evolved/changed since then.
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Sure. Maybe they have. But the industry was already selling tubeless hookless at that time. You donât introduce safety standards after launching the product. You do the engineering and industry coordination first.
This isnât a new derailleur to frame interface or BB standard. This is instant failure people get hurt engineering.
ETRTO is not a regulating bodyâŚthey have no power to compel compliance with their standards.
Tire and wheel manufacturers were and are free to introduce hookless components re: of what ETRTO says.
IIRC, in mid 2017 Mavic created their own standard for road wheels and road tires. That was about the time I adopted road tubeless.
one article here:
Apples and oranges. Standards are not regulations. Standards are what industry creates to ensure safety and performance so that regulators donât have to step in and force regulations.
Standards are how rim manufacturers ensure tire manufacturers hold to known specifications and vice versa. Itâs how to ensure the parts work together correctly. If they can ensure their parts are safe when the mating part is compliant, then they can tell consumers to buy parts that meet the standard. And warn them not to buy non-compliant products. Even better would be to have a third party certify compliance.
You know, like USB, HDMI, etc. These were not created by regulators, though regulators can require compliance to them.
Enve is doing the right thing and validation specific tires. But thereâs no saying how wide the tolerances are for each tire, not where the tire they tested falls within those tolerances and the tire maker can change those tolerances at any time without anyoneâs knowledge.