As I understand from this question, the
C in tire sizes (when expressed in metric format) is just a historical thing, and should be ignored. As I understood, also, tire sizes expressed in the ISO format should not have any dangling letters.
But then the following tire and inner tube dimensions threw me off. One of my tires reads
700x38C (40-622) (
C part of the metric size), and one of my inner tubes reads
35/43-622C (700x35/43) (
C part of the ISO size).
Is there a "typo" on the inner tube? Should the
C also be ignored on ISO sizes?
(Auxiliary question: I am assuming that
35/43 indicates a range of acceptable rim widths. Is that correct?)