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Tube vs tyre size?

Benjo74Benjo74 Posts: 67
edited February 2013 in MTB buying advice
Just picked up a spare tube for my 29er and noticed that the tyres (Rocket Ron and Racing Ralph) state a measurement of 29 x 2.25, but the tube I bought (Specialized) says 29 x 1.9/2.3.

Is the tube suitable? Im guessing it is good for a tyre between 1.9 and 2.3 and therefore is suitable.
Sorry if its a stupid question, but I don't know and don't want to find out on a muddy track in the middle of nowhere. In the rain.

FCN: 3 on the singlespeed, 4 on the roadie.


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