Something wrong with the rim diameter here?--should it be 584 and not 597?
ETRTO is 584. Outer rim diameter can differ
584 is the "bead seat diameter"
OK lets get this straight. Good ol' Sheldon Brown's site comes in handy, may he Rest In Peace."Bead Seat DiameterThe Bead Seat Diameter (B.S.D.) is the crucial dimension that determines whether a particular tire can fit onto a particular rim. It specifically refers to the "shelf" like area inside the rim where the tire's bead sits.The Bead Seat Diameter is the fundamental dimension used in the ISO/E.T.R.T.O. system of tire and rim sizing. This is the great virtue of that system, compared to all of the older systems that referred to the tire's outside diameter, with no specific reference to rim diameter nor to the rim/tire interface. "Cited: "http://www.sheldonbrown.com/gloss_ba-n.html"
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