SMH.
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Same. Lack of info here (rider weight and tire size), but itās hard to imagine that pressure was appropriate.
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The generation of Roval wheels I am talking about is a whole mess of a story. It starts about half-way down talking about the roval/sagan issues.
If this was for me it he was 175lbs and on 24mm specialized turbo cotton tires. The tire rolled off at the apex of a 90* turn, I was luckily able to miss him as he slid off the road (was behind him).
Regardless, they were hooked rims. They wouldnāt even have been able to sell them as clinchers if they were hookless.
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Iām a little confused now. The tire blew out from a hooked wheel, is it? Because, as far as I know, Roval is, and always was, hooked.
There was, in the past, a thing about them being tubeless-ready/compatible, but that is a whole different thing.
Were they?
Per that article it states
regardless, if they were hookless or hooked - I saw in a span of 4-years (2) different riders running tubeless that had the tires come-off and a redesign from Roval on the rimās.
Definitely hooked.
Additionally, the failure that led to them dropping tubeless was about the rim pressurising during a rim failure and effectively exploding.
Nothing to do with tyres randomly rolling off the rim.
Either way, nothing to do with hookless
Imagine that, hooked wheels suffer failures too.
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Nothing you quoted there would imply a hookless design. Roval does not and did not sell hookless road rims.
But you bring up a good point about some people telling anecdotes and blaming design features when in actuality they have no idea what theyāre talking about.
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ā¦and thatās exactly my point.
Itās all being dumped into the hookless account, which, I donāt think is the case.
Now, a random thought. Would the safety - or odds of something happening - be reduced by using an inner tube on hookless? Itās not āagainst the ruleā. I donāt remember seeing a safety warning against the use of inner tubes. And given that the TPU ones are pretty good, I donāt knowā¦ maybeā¦
You can indeed use tubes with hookless and do, apparently assist with tyre retention.
Doubtful. You can use a tube, but the rims require a tubeless bead. Using a tube does not enhance the bead to rim interface. If anything, I would worry that the tire would be less secure, if the tube is not applying equivalent lateral pressure directly on the bead.
Well, not sure this is a true negative for hooked considering that specific case was a legit āproblemā in design and function. Unintended consequence and definitely not what the engineers aimed to have happen. So I donāt think itās appropriate to use that example as one that knocks hooked rims. Spesh remedied that issue their new versions are proper tubeless compatible and still hooked.
Bottom line, that case hardly indicts hooked rims IMO.
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- OK, that makes sense from that data, at least per my experience and pressure calculators.
@teddygram wasnāt describing the issue with the gen1 rapide wheels that saw tyres dismount when the rim exploded, he claims the tyre just randomly dismounted. Thatās as valid as anyone elseās anecdote about witnessing a Hookless failure.
That along with the original Sagan failure as well as Fred Wright and Derek Geeās hooked tyre dismounts in PR last year, it shows that tiny hooks do not guarantee tyre retention.
No one has demonstrated cause and effect with regard to the high-profile failures on hookless rims, as such no one knows they are the result of hookless, they are just linking potential coincidences.
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Good point. Hard to keep the longer history of this all in mind and crossing wires (or hooks 
) is all too easy, at least for me. 
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Yes those are hooked like everyone posted.
Iāve had a hooked tire failure from a TIRE BEAD that stretched - Hutchinson Sector 28 tires.
HOOKED ENVE 5.6 Disc.
Hutchinson Sector 28 tire bead stretch and fail 19 miles in the middle of nowhere:
no cell coverage, group ride thankfully. Took a pic while waiting for an hour to get picked up:
Back at home:
Tire installed a week earlier, the fact it went on so easy and all these bubbles should have been a warning sign:
New tire, 3 rides on the kickr, an hour outside, and then that ride.
Pressure set to 60psi.
Iāll never buy/ride Hutchinson again!
ENVE had a picture of the tire issue:
Blow off is possible on hooked rims too, as I proved with those not-fit-for-tubeless Hutchinson Sector 28 tires.
So thats why tire beads have gotten so inflexible! I originally posted it here:
For completeness Iām adding that to my list of tubeless experiences in this thread, although the tire industry has long since moved to inflexible tire beads.
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Used on the Kickr???
No on wheel-off Kickr v3 direct drive.
Thought soā¦ was just confused for a second.
Well, thereās your problem. The tire was slacking in the pool.
Talk about pampering your bike!
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