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Hookless are very much tubeless specific! They have no hook to the rim so require a very strong tyre bead.
https://blog.flocycling.com/carbon-wheels/hooked-vs-hookless-rims/
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Hookless are very much tubeless specific!
Or, to put it another way, hookless is just a return to the way things were before the introduction of the exotic "crocheted" high pressure rim. It was always good for 45psi on 27×1¼ tyres with steel beads, the crotchet allowed us to reach the dizzying figure of 60psi 🤯
The tubeless-specific part is a shelf and retaining hump for the bead, not the hooklessness
by hookless do you mean non-tubeless specific rims? If so then yeah, pretty much every tyre I set up tubeless is on non-specific rims.
I tend to run them at higher pressures, say 35PSI minimum for a gravel tyre or 30 for an MTB tyre. I only had the MTB tyre burp once many years ago when I got it down to circa 20 psi in the alps.