This question already has an answer here:
I have a road bike that has a flat tire, the rim is marked with the text
700Cx28/38c ETRTO 622x20
I am specifically looking at this Continental tube on Amazon. Under the sizing options there is an option
700 x 25-32cc
Which I think is the one that I want. The picture of the box (not necessarily correlated to my choice in sizing) has the text
20-622 > 25-630
Which again seems to confirm that this inner tube will be correct.
Will the tube size mentioned above fit the rim I describe? Or, should I select the size
32-42cc because the range on the rim (
28/38c) has more #'s in the range 32-42 (6) than it does in the range 25-32 (5)?
I have been reading for a bit now and from what I understand the text on the rim (
28/38cc) means that the tire (not tube) size that the rim will fit is between 28mm and 38mm. But what is confusing me here is the sizing of the tubes listed as that are listed as, for instance,
25-32cc. Does this mean the tube itself will fit on rims that can fit tires (not tubes) in the range of 25mm to 32mm?
In the end what exactly should I be looking for; what sizes of tubes will fit this rim properly?
I hate to "beg" for the answer seeing how much it is looked down upon on the stackexchange sites but I seem to actually be at a loss in understanding this correctly...
EDIT: Ok so I think I understand this much better now. My tire itself has the text
700x40c. Which means that the tire itself "prefers" a tube with a cross section of 40mm; moreover the tires cross sectional area is 40 mm!? So I can then buy any tube that says it will fit/(inflate to) a tire with a cross sectional area of 40c.