An application, either software or physical chart, provides a method to determine the compatible dimensions of pneumatic bicycle tires for a given wheel. This tool often considers parameters such as rim diameter and internal width to present a range of tire widths that will safely and effectively mount. For example, inputting a rim diameter of 622mm (700c) and an internal rim width of 19mm may yield a suggested tire width range of 28mm to 47mm.
Utilizing such a tool is important for ensuring bicycle safety and performance. Choosing an incompatible tire size can lead to issues ranging from difficulty in mounting the tire, to tire slippage on the rim during use, or even catastrophic tire failure. Historically, cyclists relied on experience or printed charts to determine compatibility. Modern applications provide a quicker and often more comprehensive assessment, incorporating updated standards and manufacturer data. These advances improve the precision and accessibility of tire size selection.