Some special tires can even be wider up to 3 inches with some models.
Mountain bike tire width sizes.
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.
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.
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.
Typical mountain bike tire.
26 inches 27 5 inches and 29 inches.
Downhill bikes which are meant to withstand the abuse of drops and rock gardens are typically equipped with tires up to 2 5 wide.
Trail and all mountain bikes will have tires in the 2 25 to 2 4 width range.
Mountain bike tire size and width.
Tires come in three diameters.
A cross country bike will have tires in the 1 9 to 2 25 width range.