![]() ![]() ![]() ( 28 × 1 1⁄2 is not the same size as 28 × 1.50)Īs pictured above, the numbers that indicate the size are found on the sidewall of the tire, and although they might be confusing at first sight, they are pretty straightforward. Inch based identifications indicate the width in a decimal (26 × 1.75) or as a fraction (26 × 1 3⁄4), and although these size identifications can be mathematically equal, they also can refer to different size tires, which are not interchangeable. While traditional sizing systems are based on the outside diameter of an inflated tire (measured in inches or millimeters), the ISO standard notation uses the diameter of the wheel bead seat in millimeters preceded by the inflated tire width in millimeters. As cycling has become more global, a standardized approach was needed. The same size bike tire could be found with different numbers in different countries. In the beginning, there have been various measuring systems, with every country that manufactured bikes developing its own method of marking. Less common bike tire sizes: ISO / ETRTO (mm) ISO / ETRTO (mm)įound mostly on mountain bikes and used as a marketing term for wider 622 mm / 700C tires ISO / ETRTO (mm) Most road, hybrid, city and touring bikes. Used on mountain bikes, these tires also go by the names: 27.5+, 650+, 6Fattie, or even just "Plus tires". Use the data from the following tables to determine interchangeability and convert between ISO / ETRTO, English, and French sizes. Nowadays, bike tires are typically marked according to ISO standard ( ISO 5775), a system originally developed by ETRTO (European Tire and Rim Technical Organization), but older English and French tire size dimensions are still used as well. Share Conversion tables for common bicycle tire sizes: So when shopping for new tires, you'll need to know exactly which will fit your rims. It is a practical accessory for those who want to monitor their cycling performance and progress.Bicycle tires come in a variety of sizes, mostly depending on the type of the bike and the terrain you're riding. Overall, the Cateye Velo 7 is a reliable and straightforward bicycle computer that offers essential tracking features for cyclists. It comes with a wired speed sensor that easily attaches to the front fork of the bicycle. The computer is designed to withstand different weather conditions, making it suitable for use in various environments. The Velo 7 is constructed with durability in mind, featuring a sturdy and weather-resistant design. This feature eliminates the need for manual operation and ensures accurate recording of the cycling activity. The computer is also equipped with an auto start/stop function, which automatically starts and stops logging the data when the bicycle is in motion. This design ensures that cyclists can easily toggle through the various functions without distraction. It includes a large single button for both operation and changing the display. With its simple button operation, the Velo 7 is easy to navigate and use. The computer also offers a scan mode, which allows for automatic scrolling through the different measurements. It features a large LCD screen that allows for easy reading of the data, even while riding. The Velo 7 displays various information such as current speed, maximum speed, trip distance, total distance, elapsed time, and the time of day. It is designed to be user-friendly and easy to install on most bicycles. The Cateye Velo 7 is a bicycle computer that provides basic tracking and monitoring features while cycling.
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