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Discussion Starter #1
my Specialized road bike tires are size 700x23.

looking at inner tubes I see many available sizes including 700x18/23 or 700x20/28

would anybody know the proper size to order for a 700x23 tire?

thanks.
nick
 

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Call me a Fred
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Nick,

Either size tube will work. Tubes are very stretchy and sizing is not critical.
 

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Both are specced to fit a 23 tire, but the latter one is probably a little larger. Maybe the former would save a gram or two. ;)
 

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Just FYI, I've only bought one size for >10 years.

Well, two sizes if you count mountain bikes. But we have road tires in the family ranging from 700x23 to 41 and MB tires from 26x 1.25 to 2.3. I use 700x25 or 26x1.5 tubes in everything, and I've never had a problem.
It's better to be a little small than too big, IMO. A way-too-big tube will occasionally wrinkle and can wear a hole in itself. But close enough is close enough.
 
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