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Hi I got a used bike and my experience with bikes is very limited. The tires and tubes are all broken so I need to get new ones. I found these tires: http://www.fahrrad.de/continental-speed-king-set-26-zoll-draht-362100.html

and I found these tubes for the tires: http://www.fahrrad.de/fahrradteile/reifen-schlaeuche/rcp-fahrradschlauch-26-zoll-universal/285443.html?eqrecqid=be78e9d1-f097-11e3-804f-c8600056a33a

but when I select the tubes the website asks me for the kind of valves I need. How to select that? Should I select the valves according to a criteria or should I get any valves?

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Look at: bicycles.stackexchange.com/questions/244/… And determine which valves your old tubes had. –  Eric Smekens Jun 10 at 13:46
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You might be better off taking your old tire and tube to a bike shop, to buy replacements. The salesperson at the shop can explain the important aspects of tire/tube size. –  Daniel R Hicks Jun 10 at 13:54

1 Answer 1

Some rims have a small-diameter drilling for presta valves, so a schraeder (car-type) valve won't fit.

If your rim is drilled for schraeder valves, you can use presta valves, but you should use a plastic adapter sleeve to hold the valve in position and avoid wear to the valve stem or the edge of the drilling.

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I will order a DV valve, is that ok? –  Alex Twain Jun 10 at 13:00
    
DV is Dunlop (or Woods) valve. These are not a popular choice nowadays. See en.wikipedia.org/wiki/Valve_stem for images of the three kinds. –  Emyr Jun 10 at 13:46
    
+1 for a nice, compact, accurate answer. Just to say that I bought a new bike just last year (a Dutch sit-up-and-beg) which came with Woods valves. First time I'd seen them in 30 years but there is obviously a small following out there. –  PeteH Jun 10 at 14:49

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