I think he was asking what does zipp say about their pressures…Maybe I’m wrong.
Yes, was referring to the fact that Zipp lists a max of about the same (73), but I forgot they are hookless.
I still think the HED pressure limit is just an American based company being extra cautious. Same thing Anne seemed implied when asked about hooked vs hookless. As I’ve alluded to before, lets be honest, most bikers/triathletes haven’t got the first clue about the equipment they ride, and I’d be willing to bet most owners of newer HED wheels are going well over 70psi. I’ve yet to hear a single case of a tire blowing off a HED rim, ever.
As to the comment above about the HED’s not being in stock….I ordered mine Oct 1st and received it in Canada in less than a week. I believe the Caden wheel took 2 months?
Yes/no. It was the new 2025 model and so yes, I was waiting for it to be released. Ben did let me know and asked me to delay payment until after it was ‘in stock’. I think currently in stock now, but best to check if that’s an issue. But no-one seems to be stocking the HEDs in NZ. Trade and freight between AU and NZ is a piece of cake, less so over the atlantic.
But, to be totally fair, I nearly lost the will to live yesterday trying to get a Specialized S-works Turbo (TLR) tyre off the Caden. I’d put it on and run it with a latex tube in last week, but wanted to swap if for a GP5000 S TR for this weekend. Holy hell, the thing was welded on. In the end had to put the tyre in the hinge of a door to hold it firmly enough to budge the bead into the centre channel, then was fine. Looking online then it’s not an uncommon issue with those tyres on wider rims, but I was very very close to getting a lot of flack for having to take the wheel into a shop to get a tyre changed…. Still think this was more tyre than wheel, but in spirit of full disclosure and to help others make informed decisions be aware. FWIW a Corsa Pro Speed was a bit tougher to put on but came off fine. The GP5000 went on fine, will see how that comes off over the weekend.
GP5000 on the HEDs are near impossible without using a Koolstop tire jack. Almost as bad trying to put them on my Bontrager RXL’s too.
Hmm, the GP5000s have been ok on the Bonty RSLs and Roval CLXs for me. I do wonder if it was to do with using a tube, the wisdom of Reddit did identify that as a factor too.
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Next time you have the tyre off, can you measure the internal width between the bead hooks? 30.8mm seems wide for a 5000STR 28mm on 23mm internal width (or maybe the caliper was angled slightly when you measured?).
Yeah, was done quickly for indication more than precision. Forgot I was on Slowtwitch 
I also didn’t repeat at 3 altitudes, normalise for temperature, etc FWIW 22.5mm is the listed internal width. The tyre is narrower than the rim that is 32.8 (listed).
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Why not go with a 700x30 tire then?
I appreciate differing views. Really, see a lot of my posts. For me, then 28 tyres (labelled) are as wide as I want, and as wide as I can comfortably fit on my bike with enough clearance for the large chips that get stuck to the tyre on occasion.
Going wider tyre is more weight, risks frame/tyre damage when a chip gets stuck, and would bulge out.
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Was just an idea, since your disc is extremely wide on the outside, but has a significantly smaller inner width. A 30mm tire should end up being flush with the rim. (More comfort, better aerodynamics I’d assume.) And the SC frame can handle that easily.
I never had any chips stick to my tires, must be a New Zealand thing.
May be the photo didn’t show it too well. But the tyre is almost perfectly flush. Fractionally narrower but of course better that way.
And yes. The chipseal here is atrocious and they tend to go heavy on the chip, light on the seal. Then on hot days it does sometimes stick to the tyre. Most of time it’s not a big issue. But had one at imnz that locked the back wheel up and left score on frame and gouge in tyre on the old bike.
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