26 inches 27 5 inches and 29 inches.
Mountain bike tire width sizes.
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.
2 2 and 27 5 indicate a tire that has a width of 2 2 and an outer diameter of 27 5.
Downhill bikes which are meant to withstand the abuse of drops and rock gardens are typically equipped with tires up to 2 5 wide.
A cross country bike will have tires in the 1 9 to 2 25 width range.
Once you ve identified your tire diameter 29 27 5 or 26 you ll want to dial in your width.
Tires are also measured in width.
This varies from 1 6 to 2 5 inches.
Some special tires can even be wider up to 3 inches with some models.
Mountain bike tire size and width.
Typical mountain bike tire.
These sizes can be thought of as a sort of shorthand for decimal sizes each with a corresponding iso measurement.