Sy Reene

Apologies -- was speaking of disc braked models. But you're right, they have a narrower design offering they still sell for rim brakes. But it doesn't help the conversation anyway, because their calculator still returns only 74psi for a 205lb total setup on a hooked rim. Throwing another chart out there -- you can never have too many -- Spesh sells both rims and tires. But then again, maybe their motive is selling an advantage of hooked rims.. ya never know. Whatever the case, this reflects a 20psi difference to zipp's guidance (using the 176lb category). Just not seeing (for myself) any reason to take that leap.

msu2001la

Zipp sells disc brake hooked rims. I provided a link and description in the portion of my post that you clipped out. They just don't sell these as prebuilt wheels, but if you contact your LBS or any wheelbuilder they can get these rims and build you a Zipp hooked rim disc brake wheel.

On a hooked rim this 74psi is a recommendation, not a maximum. You can run higher pressures on hooked rims. If you like higher pressures you shouldn't get hookless.

garysol1 

Well I put the wheels on today and I am very pleased with the look. Now to wait for springtime in Michigan!

Chandne

Hookless in MTB rims equates to better impact resistance. That was the biggest benefit that lead to the practically universal (vast majority of manufacturers anyway) adoption of hookless carbon MTB rims. I'm not sure that is as important on road at 60-70 PSI but the odd pothole can suddenly decide to show up. Is there a disadvantage if you don't run more than 70 PSI? I'm running 55-65 PSI and my new road bike has hookless carbon rims. It works well with tubeless 32s. Being a mountain biker primarily, I'm comfortable with hookless and tubeless on road and gravel, though hooked rims are fine too. In fact, I almost bought a hooked tubeless carbon wheelset last year, giving up mainly due to the shifting delivery time.

SoSmellyAir

Bravo. This is the first hookless advantage in this thread that seems to make sense.

Jrasero

100% Hookless have their merits for MTB or even gravel but running a 72 psi or less hookless tire on a race bike that needs heavier tires and really is meant to be run tubeless IMO is stupid, again leave that for MTB or gravel. If you are descending and are running normal 25mm-28mm tires just stick with hooked rims IMO. I think road people only buy these since these are the cheapest entry level big name carbon wheels you can find, but people forget 1500g+ isn't light and 45mm while decently aero isn't that deep. If you are willing to not go brand name you can find plenty of 50mm to even 60mm deep wheel that are cheaper and lighter. The only reason I would buy these for a road bike is for the warranty aspect which I will say is very stellar

Chandne

Yeah, if running narrower tires, there is no need. It may even be preferable to run hooked on 25 for sure and even 28s or the tires bead MAY fall away from the rim bead when deflated. I run 32s though and am very comfortable with tubeless in general. I am currently waiting for my custom ZIPPs. The FedEx guy will not escape with them today.