Mountain Bike Tire And Rim Sizes

They can range anywhere from an internal rim width of 13mm up to around 29mm. 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. As a wider selection of 27 5 specific components become available the mountain biking industry and the mountain bikers themselves are taking notice.

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There are multiple tires to consider and it s important to understand tire size.

Mountain bike tire and rim sizes. The wtb tire rim compatibility chart is used to determine what tire and rim width combinations provide optimal performance and compatibility. The closest rim we got is the r25 17 9mm internal 25mm outer width 25mm depth. Once you ve identified your tire diameter 29 27 5 or 26 you ll want to dial in your width. Note that tire fitting varies from rim and tire designs.

By matching your tire section width to your rim width you can determine optimal compatible or not optimal fitting options to ensure the best tire rim combination. Mountain bike tire size and width. These sizes can be thought of as a sort of shorthand for decimal sizes each with a corresponding iso measurement. We recommend 21 38c tires for our r25 rims.

It s the same with our r rims 700c road. Also the rim s diameter expressed in this manner coincides with the inner diameter of the tire. Trail and all mountain bikes will have tires in the 2 25 to 2 4 width range. For example if a 2 20 tire 56mm was designed to be used on a rim with an internal measurement of 24mm and you were to mount it on an extra wide rim with an internal measurement of 29mm it would pull the overall width of the tire closer to 58mm making the tire closer to a 2 30.

Rims intended for a wider tire like mountain bike specific rims will be wider than those intended for narrower road tires. So you can take this for reference. For example 700 c was originally a wide size but now is available in very narrow widths with actual outside diameters as small as 660 mm. Therefore a 20 622 tire is a tire 20mm wide that fits on a rim with 622mm in diameter typically a road bike rim or a 29er one.

The letter codes no longer correspond to the tire width since narrow tires are often made for rim sizes that originally took wide tires. Tires are essential to mountain biking the type of terrain you ride and they can have a big impact on your riding experience. Hi hart the internal width of the dm18 is 17 9 18mm. A cross country bike will have tires in the 1 9 to 2 25 width range.

Around for a long while but largely ignored the middle child of mountain bike wheels has people talking these days. 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. There is also the french system that measures the sizes we re talking about 700x20c.