Typical mountain bike tire.
Mountain bike tire width sizes.
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.
26 inches 27 5 inches and 29 inches.
Trail and all mountain bikes will have tires in the 2 25 to 2 4 width range.
Once you ve identified your tire diameter 29 27 5 or 26 you ll want to dial in your 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.
Some special tires can even be wider up to 3 inches with some models.
These sizes can be thought of as a sort of shorthand for decimal sizes each with a corresponding iso measurement.
Mountain bike tire size and width.
2 2 and 27 5 indicate a tire that has a width of 2 2 and an outer diameter of 27 5.
This varies from 1 6 to 2 5 inches.
Tires are also measured in width.