Bicycle Tires Sizes Explained 1

A third type of tire size might appear on either a mountain or a road tire.

Stationary bicycle elliptical. I think the bike was nominally billed as a mountain bike or maybe a hybrid when originally sold back in 1990 its a trek 850 antelope but i dont ride on anything but pavement i use it for commuting to work. Check out the following for 20 year old bike tires sizes explained. The 26 refers to tire sizes.

International organization for standardization. 26 used to be the standard for mountain bikes but now there are sizes like 275 and 29. Mountain bike tire sizes come with fast rolling quality with a pair of number 275x 2.

Some older road bikes still have the 27 inch size. Nowadays bike tires are typically marked according to iso standard a system originally developed by etrto european tire and rim technical organization but older english and french tire size dimensions are still used as welluse the data from the following tables to determine interchangeability and convert between iso etrto english. Please read my post about best bikes for commuting.

When it comes to choosing width there are two major factors at play. Bicycle tires come in a variety of sizes and with time the international organization for standardization iso has developed a universal system to better understand and regulate tire and rim sizing. I am having a hard time finding road or hybrid tires similar to the ones currently on my bike in 26 x 15 size.

700x25c indicates a tire with a 700mm outer diameter and a 25mm width. The tire size chart below includes bicycle tire sizes and how they are commonly written. Road bike tires generally come in three widths.

While the first number the diameter of the tire is most important in identifying size theres a little more to how tires are measured with a more globally unified approach. Road touring and racing tier. This system states the 622mm inner.

25 622 is the international standardization organization iso way of identifying the 700x25c tire in the example above. Common road bike widths in millimeters come in sizes ranging from 18 to 23 with a typical road bike tire at 700 x 23. Where 275 is the diameter and outside width is 2.

23c 25c and 28c their width in mm. Conversion tables for common bicycle tire sizes. The letter at the end of a tire size is a throwback to an old french system when the letters a b and c designated different inner tire diameters it does not stand for cm.