# Tyres, Hookless rims, boom?
**URL:** https://fixed.org.au/t/tyres-hookless-rims-boom/158440
**Category:** Help
**Created:** [July 26, 2021, 3:25am UTC](https://fixed.org.au/t/tyres-hookless-rims-boom/158440 "2021-07-26T03:25:29Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Sh0rtsie](https://fixed.org.au/u/Sh0rtsie)
#### Post date: [July 26, 2021, 3:25am UTC](https://fixed.org.au/t/tyres-hookless-rims-boom/158440/1 "2021-07-26T03:25:30Z")
Hey. Soooo,
Just wondering, SimWorks recommend that you don’t use their tyres on hookless rims. I cant work out whether that is them being cautious and it should be fine, or that you’ll probably die if you do it.
I have the Hunt X Mason 650b wheels that use H-lock. They are super vague as to whether classifies it as hookless. When asked if they are Hookless, they respond “It’s H-Lock!” Which is unhelpful.
Thoughts?
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### Author:  [@AL9000](https://fixed.org.au/u/AL9000)
#### Post date: [July 26, 2021, 3:51am UTC](https://fixed.org.au/t/tyres-hookless-rims-boom/158440/2 "2021-07-26T03:51:28Z")
> [@Sh0rtsie](#):
>
> Hunt X Mason 650b
tubeless? AFAIK not as big a deal with tubes.
Those rims are aluminium, so unlikely they’re hookless as that’s a thing for carbon rims to make them stronger
H-lock is the tubeless shelf I’m guessing, different thing.
You can see the hook in the sidewall profile, and the H-Lock shelf on the rim bed.
and FWIW I was running WTB Byways on hookless carbon rims, tubeless, down to some VERY low pressures after a slow tubeless seal leak and the tyre didn’t roll or blow off. But anecdote is not data.
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### Author:  [@Sh0rtsie](https://fixed.org.au/u/Sh0rtsie)
#### Post date: [July 26, 2021, 4:38am UTC](https://fixed.org.au/t/tyres-hookless-rims-boom/158440/3 "2021-07-26T04:38:37Z")
Ahhhh.
Ya, ok so mine are hooked. I didn’t see that slide. They had another page where they kinda explain it, but use a hookless profile in the pic. Right.
Well. If i ever get hooked rims, good to know ill probably be fine.
Cheers
Blakey!
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### Author:  [@dannat](https://fixed.org.au/u/dannat)
#### Post date: [July 26, 2021, 7:39am UTC](https://fixed.org.au/t/tyres-hookless-rims-boom/158440/4 "2021-07-26T07:39:33Z")
they are prob being cautious, would think only a problem at low pressure, they might not use term hookless also as it’s a licensed word, like 2bliss, tubeless etc
sim works are made by panaracer anyways aren’t they, they’ve been making tyres for a while, incl lots of gravel tyres, will b fine
they can b a pain to get tubeless though, in certain tyre/rim combos