Innertube question.

[wilko]

I am going to buy a Specialized Tricross Sport and sell my Specialized Secteur Elite. My question is would I be able to use my spare innertubes I have for the Elite on the Tricross even though the tyre is wider? The Elite is 700x25 and the Tricross 700x32.

 

[gaz]

Depends what it says on the inner tubes.

Probably not ok - 700x18-25
Ok - 700x25-35

Basically if the width of your tyre fits in the numbers after 700x, then you are good to go.

 

[wilko]

Ah, thanks gaz, I never thought to look on the inner tube. It says Thin 20-25, so probably not then!

 

[smutchin]

I've used undersized inner tubes before without any problem. I would think you could get away with fitting 25C tubes in a 32C tyre. I probably wouldn't fit them in a tyre much bigger than that though.

Oversized inner tubes are more of a problem because they make it harder to fit the tyre back on the rim.

By the way, I have some Panaracer tubes that are rated for an unusually wide 18-32C range, so I suspect some manufacturers are a bit conservative with their ratings.

d.

 

[Blue Hills]

currently 50 % off innertubes.

http://www.edinburghbicycle.com/