Mountain Bike Tire Width Sizes

26 inches 27 5 inches and 29 inches.

Mountain bike tire width sizes.

Tires come in three diameters. Mountain bike tire size and width. Check your tire s sidewall the numbers there indicate your tire size roughly its outer diameter and its width but not always in that order. 2 2 and 27 5 indicate a tire that has a width of 2 2 and an outer diameter of 27 5.

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. Some special tires can even be wider up to 3 inches with some models. This varies from 1 6 to 2 5 inches. Once you ve identified your tire diameter 29 27 5 or 26 you ll want to dial in your width.

These sizes can be thought of as a sort of shorthand for decimal sizes each with a corresponding iso measurement. Tires are also measured in width. Downhill bikes which are meant to withstand the abuse of drops and rock gardens are typically equipped with tires up to 2 5 wide.