Originally Posted by
jrickards
OK, thanks for the correction. However, it is weird that, on the side of the tire and on the Schwalbe website, it says both 700Cx35 and 37-622 whereas some other Schwalbe tires say 700Cx35 and 35-622.
It was because of the 700Cx35/37-622 discrepancy that I (incorrectly) deduced that the 700 measurement is width and ERTO is height.
This is why so many people are confused by tyre sizing... those wider 622 tyres that are produced by Schwalbe (and others) may also have a fractional measurement of 28 inches on them as this is also the standard tyre size on most non British roadsters that may also be labelled as 28 by 1 3/8 & 1 5/8 (Canada) or as 28 by 1 1/2.
Those British roadsters run a 28 by 1 1/2 inch tyre which actually sits on a 635 mm rim and are not interchangeable with the continental 28 inch tyres.... for this reason they are called English oversize although their height is effectively the same because of a shallower tyre depth.
In the French system a 635mm rim is a 700B.