ISO 584 - 650b - 27.5"
This is the size used on most older French touring, tandem and utility bikes. It has since become popular on modern randonneur bikes. Most recently, they are found on many off-road bikes as the 27.5" size. This size was also used on a few models from Raleigh (Portage) and Schwinn (Frontier, Mirada
and labeled as 26x1-1/2". (This is not the same as the Canadian 26x1-1/2" size-that's 571 mm.)
Very high quality Japanese-made skinwall tire in the 650B (584) 27.5 x 1.75 size Tubeless compatible. -Minimal yet effective "file" tread paired with robust volume succeed in less favorable conditions where road tires fail -A true adventurers tire, the Gravel King is as at home on road as it is on gravel fire roads and tightly packed dirt -Featuring Panaracers Natural Rubber Compound for superior grip in all weather
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