ETRTOsysteem

The ETRTOsysteem, or ETRTO system, is a standardization framework used primarily for the sizing and designation of bicycle tires and rims. Established by the European Tyre and Rim Technical Organization (ETRTO), the system aims to ensure compatibility and safety between tires and wheels across different manufacturers and regions. It provides clear, standardized measurements that facilitate the correct pairing of tires to rims.

The ETRTO designation typically consists of two numbers separated by a hyphen. The first number indicates the tire width in millimeters, while the second denotes the tire’s internal diameter in millimeters. For example, a measurement of 23-622 signifies a tire width of 23 mm and an internal diameter of 622 mm, which is the standard size for many road bicycles, also known as 700c tires.

The system also includes guidelines for rim dimensions, ensuring that rims match the specified tire sizes for optimal performance and safety. ETRTO standards are used globally and have been adopted by many bicycle manufacturers and component producers to provide consistency, reduce incompatibility issues, and improve safety standards.

The ETRTO system is part of a broader effort to harmonize bicycle component specifications. It complements other sizing systems, such as the French nominal size (e.g., 700c) and English measurements, by offering precise, universally recognized data. This level of standardization supports manufacturers, retailers, and consumers in selecting compatible and reliable bicycle parts.

Overall, the ETRTOsysteem plays a crucial role in ensuring safety, compatibility, and interoperability within the cycling industry, contributing to easier maintenance, repair, and component replacement.