Bicycle tire sizing standards
5 posts
Bicycle Tire Size Conversion and Comparison Chart
Learn how to read bicycle tire sizes like 700x25C, 26x1.95, or ETRTO 37-622. Compare widths, diameters, and circumferences, and understand what affects fit and performance.
Bicycle Fractional vs Decimal Tire Sizes: Are They Interchangeable?
Learn how to read bicycle tire sidewalls, understand fractional and decimal inch sizing, and determine whether tires with different markings are interchangeable based on ISO/ETRTO dimensions.
How to Measure Bicycle Tire Size: From Sidewall Markings to Mounted Width
How to read the size on a bicycle tire sidewall (ETRTO, 700c and inch sizes), measure mounted tire width with calipers, and estimate diameter and circumference.
650b vs 700c: Bicycle Tire and Wheel Sizes Compared
How to read 650b and 700c sidewall markings, how 584 mm and 622 mm rims compare in diameter, and when the two wheel sizes are interchangeable.
700c and 29-Inch Bicycle Tires: Sizes, Markings and Real Differences
700c and 29-inch bicycle tires both fit a 622 mm bead seat diameter rim. Learn to read sidewall markings, compare widths and diameters, and see where fitment limits apply.