Halp Plox: Bicycle Computers, Tire Size, Fat Bikes

Weird. It says "26 x 4" on the tire. The rim is like 22 inches.
Perhaps so you don't buy a 29" tire that's intended for a 29" inch rim. With the fat tire although the diameter of the tire is 29" it needs a smaller rim diameter than a 2" wide tire would use to get the 4" width on the fat tire.
 
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