{"id":104212,"date":"2026-01-12T08:37:59","date_gmt":"2026-01-12T08:37:59","guid":{"rendered":"https:\/\/ruegg.ping-ag.ch\/?post_type=blog&#038;p=104212"},"modified":"2026-03-10T08:48:41","modified_gmt":"2026-03-10T08:48:41","slug":"the-importance-of-the-etrto-standard-for-bicycle-tires","status":"publish","type":"blog","link":"https:\/\/ruegg.ping-ag.ch\/en\/blog-posts\/die-bedeutung-der-etrto-norm-fuer-fahrradreifen\/","title":{"rendered":"The importance of the ETRTO standard for bicycle tires."},"content":{"rendered":"<p class=\"has-medium-font-size\">Bicycles come in many different sizes. Accordingly, tubes and tires also have individual dimensions. In the following article, we explain how to determine the right size for your bike with ETRTO.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What does the ETRTO standard mean for bicycle tires?<\/strong><\/h2>\n\n\n\n<p class=\"has-medium-font-size\">The <strong>ETRTO standard<\/strong> (European Tyre and Rim Technical Organization) ensures that tires and rims are uniformly marked worldwide, putting an end to confusing inch and inch size specifications such as \u201c28 inch\u201d or \u201c700C\u201d, which can vary depending on the manufacturer.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why is this important?<\/strong><\/h2>\n\n\n\n<p class=\"has-medium-font-size\">Thanks to the <strong>ETRTO standard<\/strong> you can be sure that the tire and rim fit together perfectly. This reduces the risk of fitting problems and increases safety when riding.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Advantages of the ETRTO standard.<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-medium-font-size\">Standardized size specifications worldwide<\/li>\n\n\n\n<li class=\"has-medium-font-size\">Simple tire change without guesswork<\/li>\n\n\n\n<li class=\"has-medium-font-size\">More security and compatibility<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile has-background\" style=\"background-color:#eeefef\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"2509\" height=\"1669\" src=\"https:\/\/ruegg.ping-ag.ch\/wp-content\/uploads\/2025\/12\/Reifenlabel-Groessenangaben.jpg\" alt=\"\" class=\"wp-image-104099 size-full\"\/><\/figure><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\">How do you read the ETRTO specification?<\/h2>\n\n\n\n<p>A typical example: <strong>40-622<\/strong><\/p>\n\n\n\n<p><strong>40<\/strong> = Tire width in millimeters<br><strong>622<\/strong> = Inner diameter of the rim in millimeters<\/p>\n\n\n\n<p>This means: This tire is 40 mm wide and fits on a rim with a diameter of 622 mm (corresponds to about 28 inches).<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"download-section  max-width-container\">\r\n         <h2 class=\"download-section-title\">What tire sizes are available?<\/h2>\r\n    \r\n    <table class=\"download-table\">\r\n                <tr>\r\n            <td class=\"download-title\">\r\n                Tire size table            <\/td>\r\n\r\n            <td class=\"download-buttons\">\r\n                                                            <a class=\"btn-download button\" \r\n                           href=\"https:\/\/ruegg.ping-ag.ch\/wp-content\/uploads\/2026\/01\/groessen_etrto.pdf\" \r\n                           download>\r\n                           Download                        <\/a>\r\n                                                <\/td>\r\n        <\/tr>\r\n            <\/table>\r\n<\/div>\r\n\n\n\n<p class=\"has-medium-font-size\">You should find almost every known size designation in this list. We have tried to include all size designations that are used in the market or were used in the past.<\/p>\n\n\n\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile has-background\" style=\"background-color:#eeefef\"><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\">Why are inch markings on bicycle tires often confusing?<\/h2>\n\n\n\n<p>Tires with the designations <strong>28 inch<\/strong> and <strong>29 inch<\/strong> both have the same <strong>Rim inner diameter of 622mm<\/strong>. This means that they theoretically fit on the same rims.<\/p>\n\n\n\n<p><strong>28 inch<\/strong> is the classic size for touring bikes in Europe and is very widespread.<\/p>\n\n\n\n<p><strong>29 inch<\/strong> was later introduced in the USA for mountain bikes. The name comes from the fact that the tires are thicker there and the <strong>Outer diameter <\/strong>is approximately 29 inches.<\/p>\n<\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"2509\" height=\"1669\" src=\"https:\/\/ruegg.ping-ag.ch\/wp-content\/uploads\/2025\/12\/velos.jpg\" alt=\"\" class=\"wp-image-104116 size-full\"\/><\/figure><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why is this information inaccurate?<\/strong><\/h2>\n\n\n\n<p class=\"has-medium-font-size\">The inch size does not refer to the rim diameter, but to the outer diameter of the complete wheel - and this depends on the tire width.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"has-medium-font-size\">A narrow road bike tire (e.g. 23 mm) actually only has about <strong>26 inch <\/strong>Outside diameter<\/li>\n\n\n\n<li class=\"has-medium-font-size\">With a width of approx. 40 mm you get approximately <strong>28 inch<\/strong><\/li>\n\n\n\n<li class=\"has-medium-font-size\">Very wide tires (60 mm or more) reach almost <strong>30 inch<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusion: ETRTO - The key to choosing the right tires.<\/strong><\/h2>\n\n\n\n<p class=\"has-medium-font-size\">The inch specification is only a rough guide. The ETRTO specification (e.g. 37-622) is decisive for an exact fit, as it specifies the rim diameter and tire width in millimetres.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-right is-layout-flex wp-container-core-buttons-is-layout-d445cf74 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/ruegg.ping-ag.ch\/en\/two-wheel-tire-world\/\">Two-wheel tire world<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Fahrr\u00e4der gibt es in vielen unterschiedlichen Gr\u00f6ssen. Dementsprechend besitzen auch Schl\u00e4uche und Reifen ein individuelles Mass. Wie du dir richtige Gr\u00f6sse f\u00fcr dein Fahrrad mit ETRTO bestimmst, erkl\u00e4ren wir dir im folgenden Beitrag. Was bedeutet die ETRTO-Norm bei Fahrradreifen? Die ETRTO-Norm (European Tyre and Rim Technical Organisation) sorgt daf\u00fcr, dass Reifen und Felgen weltweit einheitlich [&hellip;]<\/p>\n","protected":false},"featured_media":103848,"template":"","blog_category":[19016,19018],"class_list":["post-104212","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-reifenwissen_fahrrad","blog_category-tippstricks"],"acf":[],"_links":{"self":[{"href":"https:\/\/ruegg.ping-ag.ch\/en\/wp-json\/wp\/v2\/blog\/104212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ruegg.ping-ag.ch\/en\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/ruegg.ping-ag.ch\/en\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ruegg.ping-ag.ch\/en\/wp-json\/wp\/v2\/media\/103848"}],"wp:attachment":[{"href":"https:\/\/ruegg.ping-ag.ch\/en\/wp-json\/wp\/v2\/media?parent=104212"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/ruegg.ping-ag.ch\/en\/wp-json\/wp\/v2\/blog_category?post=104212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}