Hookless or not?

Put it this way, if the GP5000S TR blows off my hook-less rim. its done me a favor.

Because I am confident I wont be able to remove them myself without cutting them off.

4 Likes

They stretch over time - dont worry :slight_smile:

Thought I’d share a couple photos of why I love my hooked rims. These are the Poertner-approved 3T Discus wheels (29mm inner width, 40mm outer, hooked) with 32mm GP5000s. The tires measure around 36mm, make a really nice shape with the rims, handle great in crosswinds and are super comfy at 45-50PSI. They’re fantastic on our terrible roads and handle light gravel just fine too.



I totally agree that hookless can be safe, with the caveat that you need a >5mm (and ideally more) delta between rim ID and tire width. But setups like the 3T wheelset couldn’t reasonably be achieved with hookless rims, and I do think they provide a combo of aero gains and ride quality that is worth chasing.

7 Likes

I’m not questioning your setup…I personally think it’s fine. But…why the statement that the tire should be more than 5mm bigger than internal width with hookless, but you run 3mm? I’m just wondering why you think the hooks make a difference there.

  1. I’m thrilled you approve of my setup.

  2. Christ man, reading comprehension. That article that’s been linked to literally 10 times, at least twice in specific response to your failure to understand the basics here. Figure it out.

7 Likes

Hooked rims if you love your kids

That looks super comfortable and still within the 105%.

Does Poertner has any connection with 3T? He’s mentioned them a few times in the podcast. He seems to have some insider knowledge but it could be just from their internal testing independently.

for the win…

2 Likes

How have you (we?) not worked out that the bloke is trolling yet :rofl:

1 Like

Yeesh, forget it.

If it wasnt for the hooks that setup whould not be safe. The tyre would have an unacceptably high chance of blowing off the rim at the pressures you would want to run at.

One thing I havent seen talked about, car wheels are a foot or more in inner width, are hookless, have tires wildly outside the suggested ratios, experience dramatically greater loads in every directkon, and yet have no risk of blowoff. And they’ve been this way for decades and decades.

I get it’s apples and oranges. But I think it also shows lack of hooks arent exactly the limiter here.

Troll 'em if you got 'em

I’m sorry - no more food from me :grin:

2 Likes

Giant seems to make a good hookless rim

Car tire’s and wheels are insanely different than bike tire/wheels and have extremely different use cases. If you want to see a tire that will blow-off or spin off a rim look at a traditional rim without bead lock or set screw’s (image below has the mentioned lock/screws) Spinning a traditional drag slick.

image

A drag slick is closer to the characteristics and requirements of a bike tire than a standard on-road DOT radial. A radial has stiff side walls and does not have a tire roll affect for traction - cars use suspension for traction, bikes are using tire flex.

2 Likes

What about train wheels?

4 Likes

Let me rephrase this. I’m not even trying to say I’m right. I’m probably not.

But, what difference between car wheels and bike wheels necessitates the requirement for hooks on one, but not the other? And I’m certainly willing to accept that there IS a difference that necessitates hooks in bike wheels. But IMO the above question needs to be answered…or all this is just going off faith, or lack thereof (on both sides).

Hooked vs. Hookless Rims - FLO Cycling.

Car and motorcycle tires can stand on their own. However, a bicycle tire does not contain the same structure and will collapse on itself. The thinner casings of a bicycle tire allowed the tire to stretch under pressure. While this saved weight, it led to tire blow offs at high pressures. To prevent blow-offs, hooks were added to the rims to hold the tire in place.

2 Likes

Hey tank tracks are hookless. ā€œWhat difference between [tank tracks] and bike wheels necessitates the requirement for hooks?ā€