{"id":2551,"date":"2026-02-18T20:08:23","date_gmt":"2026-02-18T19:08:23","guid":{"rendered":"https:\/\/cyclingreview.nl\/?p=2551"},"modified":"2026-02-18T20:14:04","modified_gmt":"2026-02-18T19:14:04","slug":"hooked-vs-hookless-rims-difference-explanation-2025","status":"publish","type":"post","link":"https:\/\/cyclingreview.nl\/en\/hooked-vs-hookless-velgen-verschil-uitleg-2025\/","title":{"rendered":"Hooked vs hookless rims: what's the difference and which suits your riding style?"},"content":{"rendered":"

Two wheels, two systems, one question: hooked or hookless? Since hookless<\/strong> (straight-side) rims became the standard in mountain biking around 2014, the technology has steadily moved towards gravel and road. Brands such as Zipp<\/strong>, ENVE<\/strong> and Hunt<\/strong> are building their latest wheelsets without \u2018hooks\u2019. Yet a significant portion of the peloton, including WorldTour teams, still ride on hooked<\/strong> rims and there are producers, such as Princeton CarbonWorks<\/strong>, which only produce hooked rims. The reason: it is a system choice, not an upgrade.<\/p>\n\n\n\n

Where is the difference?<\/h2>\n\n\n\n

It revolves around the point where the tyre sits on the rim, known as the bead seat<\/strong>. A hooked rim<\/strong> has an inward projecting rim flange, the hook, at the top of the rim wall. That hook acts as a catch: when air pressure pushes out the tyre bead, the hook prevents the tyre from sliding off the rim. Especially at higher pressures (above 5 bar), this is a relevant safety margin.<\/p>\n\n\n\n

A hookless rim<\/strong> has straight, vertical rim walls without a hook. The tyre is held in place by a combination of bead locks<\/strong> (small ridges on the rim bed) and the stiffness of the tyre bead itself. This works, but only if the tolerances are right: the bead seat diameter of the rim and the tyre bead must be exactly matched.<\/p>\n\n\n\n

Briefly:<\/p>\n\n\n\n

    \n
  • Hooked<\/strong> = mechanical redundancy via the hook<\/li>\n\n\n\n
  • Hookless<\/strong> = Press-fit system, depending on size tolerances and tyre stiffness<\/li>\n<\/ul>\n\n\n\n
    \n
    \"\"<\/figure>\n<\/figure>\n\n\n\n

    Pressure: the real ceiling<\/h2>\n\n\n\n

    The main limitation of hookless is the maximum tyre pressure of 72.5 psi (5 bar)<\/strong>. This is not a conservative recommendation, but a hard limit from the ETRTO<\/strong>-standard. Above that pressure, the risk increases that the tyre bead will stretch and shoot off the rim, simply because there is no hook to act as a safety net.<\/p>\n\n\n\n

    For riders who ride 28 mm or wider at lower pressures (50-65 psi), this is not a problem. But those accustomed to tight 25 mm tyres at 90+ psi immediately bump into that limit. Hookless forces you towards wider tyres and lower pressure.<\/p>\n\n\n\n

    And there is a practical side to it: your floor pump is not always accurate to 0.2 bar. A deviation of 5-10% on your manometer can make the difference between 4.8 and 5.3 bar. With hooked rims, this is an inconvenience. With hookless, it's a risk.<\/p>\n\n\n\n

    Compatibility: not an afterthought<\/h2>\n\n\n\n

    Hookless rims are tubeless only<\/strong>. That means: the tyre itself must be hookless-compatible, with a non-stretchable bead that meets the ISO 5775<\/strong>-standard. Mounting a standard clincher with inner tube on a hookless rim is not an option for everyday use. In an emergency, you can fit an inner tube, but the tyre should always be hookless-rated.<\/p>\n\n\n\n

    That limits your choice of tyres. Not every manufacturer offers hookless-compatible models, and the combination of rim width and tyre size has to be right. The ETRTO<\/strong>-guidelines from 2022\/2023 stated, for example, that a 28 mm tyre should not be on a rim with 25 mm internal width, a combination that several wheel manufacturers and WorldTour teams were simply using at the time.<\/p>\n\n\n\n

    No, \u201cjust mounting another tyre\u201d is not always plug-and-play with hookless.<\/p>\n\n\n\n

    Manufacturing: why manufacturers want hookless<\/h2>\n\n\n\n

    From a wheelbuilder's perspective, hookless has distinct advantages. Hooked carbon rims require complex silicone moulds<\/strong> to form the hook. That soft tooling leads to variations in the dike of the carbon, making quality control difficult. <\/p>\n\n\n\n

    Hookless rims are produced with steel moulds<\/strong> (hard tooling). This provides:<\/p>\n\n\n\n

      \n
    • Better carbon compression and therefore a stronger, lighter profile<\/li>\n\n\n\n
    • Tighter dimensional tolerances on the bead seat<\/li>\n\n\n\n
    • Lower production costs (perhaps the main<\/strong> reason<\/strong> behind the choice for hookless<\/strong>)<\/li>\n\n\n\n
    • Thicker, impact-resistant rim flanges<\/li>\n<\/ul>\n\n\n\n

      The weight advantage is real but modest: about 10-20 grams per rim<\/strong>. Some brands, including ENVE<\/strong>, invest that weight saving partly back into thicker rim flanges to prevent snakebite punctures.<\/p>\n\n\n\n

      Despite production savings, hookless wheels are rarely offered significantly cheaper than hooked alternatives. The savings are mainly on the factory side.<\/p>\n\n\n\n

      Which discipline you cycle determines the logic<\/h2>\n\n\n\n

      The question \u201chooked or hookless?\u201d has no universal answer. The discipline dictates which system makes sense. There is a clear difference between road cycling, gravel and MTB.<\/p>\n\n\n\n

      Mountain bike and gravel:<\/strong> hookless is the dominant standard here. Tyres have large volume, are ridden at 20-45 psi, and the thicker rim flanges offer better protection from rocks and roots. The 5-bar limit is completely irrelevant at these pressure ranges.<\/p>\n\n\n\n

      Road:<\/strong> this is where the tension lies. The trend towards wider tyres (28-32 mm) and lower pressures makes hookless technically feasible. But the margins are smaller than off-road. The combination of higher speeds, longer descents and the importance of reliable bead retention in case of a puncture makes compatibility and pressure compliance more critical. And so then you sometimes see these excesses where a tyre suddenly pops off.<\/p>\n\n\n\n

      WorldTour: no single answer<\/h2>\n\n\n\n

      The pro peloton is divided. Teams with ENVE<\/strong>-sponsorship, such as UAE Team Emirates<\/strong>, ride completely hookless. Their riders typically use 28-30 mm tyres at pressures between 52 and 65 psi, well within the limit. Teams on Zipp<\/strong> follow a similar path.<\/p>\n\n\n\n

      Other teams stick to hooked rims. The reason is pragmatic: maximum tyre choice freedom, the option to adjust pressure to course and conditions, and less dependence on compatibility lists.<\/p>\n\n\n\n

      The crash of Thomas De Gendt<\/strong> during the UAE Tour in 2024 led to increased attention to the system. Images showed a detached tyre and an entangled tubeless insert. Investigations by the UCI<\/strong>, Zipp<\/strong> and Vittoria<\/strong> concluded, however, that the incident was caused by a heavy impact (presumably a stone) that broke the rim. Once the structure of the rim had failed, no system, hooked or hookless, could keep the tyre in place.<\/p>\n\n\n\n

      In response, the UCI launched a review of hookless systems and stressed that teams should strictly follow the ISO 5775<\/strong>- and ETRTO<\/strong>-standards must follow. WorldTour teams have dedicated mechanics, selected tyre-rim combinations and set protocols.<\/p>\n\n\n\n

      The trade-off for you<\/h2>\n\n\n\n

      You can of course use both rim types. But which one suits you? We list it again:<\/p>\n\n\n\n

      When is it best to choose Hookless rims?<\/strong><\/p>\n\n\n\n

      You choose hookless rims as:<\/p>\n\n\n\n

        \n
      • You already ride tubeless with 28 mm or wider<\/li>\n\n\n\n
      • Your pressure stays below 5 bar<\/li>\n\n\n\n
      • You are willing to choose tyres from your wheel manufacturer's compatibility list<\/li>\n\n\n\n
      • You want to exploit the advantages of wide internal rim profiles<\/li>\n<\/ul>\n\n\n\n

        When do you choose hooked rims?<\/strong><\/p>\n\n\n\n

        You choose hooked rims if you:<\/p>\n\n\n\n

          \n
        • You want maximum tyre choice<\/li>\n\n\n\n
        • You sometimes ride with inner tubes<\/li>\n\n\n\n
        • You prefer higher pressure (narrower than 28 mm, tight asphalt)<\/li>\n\n\n\n
        • You regularly switch between tyre brands or types<\/li>\n<\/ul>\n\n\n\n

          Hookless requires the whole chain, rim, tyre, pressure and tolerances, to be treated as one. With hooked rims, there is no such dependence on exact size tolerances and pressure limits.<\/p>","protected":false},"excerpt":{"rendered":"

          Hookless rims are advancing from mountain bike to road, but the choice is less straightforward than manufacturers make it seem. A technical analysis of bead retention, pressure limits and compatibility.<\/p>","protected":false},"author":1,"featured_media":2553,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[27],"tags":[53,231,232,233,123],"class_list":["post-2551","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materiaal","tag-gravelwielen","tag-hooked","tag-hookless","tag-mtb-wielen","tag-wielen"],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/posts\/2551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/comments?post=2551"}],"version-history":[{"count":3,"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/posts\/2551\/revisions"}],"predecessor-version":[{"id":2555,"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/posts\/2551\/revisions\/2555"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/media\/2553"}],"wp:attachment":[{"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/media?parent=2551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/categories?post=2551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cyclingreview.nl\/en\/wp-json\/wp\/v2\/tags?post=2551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}