Mountain Bike Tire Sizes

A hybrid of road and mountain tires cyclocross tires are labeled as 700c and have widths indicated in millimeters like road bikes yet are knobbie like mountain bike tires.

Mountain bike tire sizes.

And right behind those big 29ers are wheels of yet another size. These widely used measurements refer to the tire s diameter and are typically paired with a tire width in inches when written out i e. 27 5 also know as 650b or 29 called 29ers with traditional 26 wheels reserved for dirt jump freeride and kids bikes. 700x25c indicates a tire with a 700mm outer diameter and a 25mm width.

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 well use the data from the following tables to determine interchangeability and convert between iso etrto english. A tire size you might see on a mountain bike. Whether you are mountain biking on dry trails in utah or through the waterfalls of iceland having the right tires is crucial for the best riding experience. 29 x 2 0.

Conversion tables for common bicycle tire sizes. These sizes can be thought of as a sort of shorthand for decimal sizes each with a corresponding iso measurement. Sizes written as decimals such as 2 75 are different than sizes expressed as fractions such as 2 3 4. Modern mountain bike tires using this size may be labeled 650b or 27 5.

Mountain bike tire size and width. A third type of tire size might appear on either a mountain or a road tire. The 29er another popular size for mountain bike wheels and tires. Sometimes referred to as 650b the 27 5 inch wheel fits right in between the 26 and 29 inch offerings.

Once you ve identified your tire diameter 29 27 5 or 26 you ll want to dial in your width. Trail and all mountain bikes will have tires in the 2 25 to 2 4 width range. A tire size you might see on a road bike. Read the size carefully.

29 x 2 3 indicates a tire with a 29 outer diameter and a 2 3 width. The sizes you commonly see for mountain bike wheels like 26in 27 5in and 29in all refer to the outside diameter of the wheel with the tire fully inflated. A cross country bike will have tires in the 1 9 to 2 25 width range. Making a comeback in mountain biking is the 650b.

While 26 inch wheels are still considered the standard for mountain bikes 29 inch wheels are fast on their heels. There are multiple tires to consider and it s important to understand tire size.