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Tire circumferences can be calculated from the following formula, where TT stands for tire thickness, RD for rim diameter, and TC for tire circumference. (TT × 2 + RD) × pi = TC. Alternatively, the tire circumference can be determined without the need for mathematical calculations by following these steps: Rotate your rear tire until the ...
For a near approximation of wheel circumference, you can find tire size written/molded into the side of your tires. Find that tire size in the chart below and enter the corresponding value in meters. Please see Setting Up Wheel Circumference for detailed instructions and additional information.
This article aims to explain modern tire sizes, how they're designated, and how to convert from older systems. What is ISO 5775? ISO 5775 is the international standard for labelling the size of bicycle tires and rims.
Guide on how to read bicycle tire specifications and how to choose the right size to fit your rims. Convert between ISO/ETRTO, English, French standards
23 sty 2024 · To determine the right tire size for your road bike, check your wheel’s diameter (commonly 700c) and rim width. The most popular sizes are 25mm to 28mm for a balance of comfort and efficiency. Ensure the width is compatible with your rim and provides sufficient clearance in your bike frame.
That’s how the diameter and circumference (circ – equals distance rolled in one turn of the wheel) are calculated in the Tyre size table. These figures are useful for setting your cycle-computer and precisely calculating gears.
In our bike tyre size chart, there are 3 columns, one for each measurement, which makes it easy to convert bike tyres sizes from metric to imperial / or vice versa. You can also use the bike tyre size chart to convert ETRTO (European Tyre and Rim Technical Organisation) bicycle tyre size data to one of the other types.
