[road]

For 25 mm tyres I can fit either a 18-25mm inner OR a 25-32mm inner.  (Sourcing from Decathalon)

 

Does it matter? Any advantage/disadvantage involved?

 

Yes I really am this new to cycling. Embarassing at 45……

Topic

[Man of Lard]

I run 28mm tyres – actually

I run 28mm tyres – actually on the bike I have 18/28 tubes. In my pocket I carry 28/45s…

Why? Because I mostly ride with chaps who apparently enjoy hammering their prostates on 23mm tyres pumped up to infinity PSI… One of them keeps puncturing but never carries a spare tube, patches or a pump & I got fed up providing tubes that he always promised to replace (still waiting on any never mind all). Now I can’t provide him with a tube so either someone else can, or he’s on the walk/call of shame.

Forgetting once is forgivable, twice starts to look careless, thrice is extracting the weewee.

[matthewn5]

Doesn’t seem to matter. I

Doesn’t seem to matter. I never check the size of the tubes and they still work in 25s on wide rims 😉

[Anonymous]

I’m starting to lean towards

I’m starting to lean towards fitting 28mm tyres anyway.

 

Which kind of makes the entire question pointless.

 

Sorry 🙁

Thanks for the advice anyway.

 

EDIT: Should add I’m at the “I used to be indecisive, but now I’m not so sure” stage of buying a bike.

[mike the bike]

 

 

I’d go for the larger size even though there is a small risk of snagging it during fitting.  I reckon that the smaller one will be inflated to its maximum size and stretched to the limit, a bit like a balloon.  This means it will puncture more easily than the larger one that should be more relaxed.

Well, that’s my theory anyway ……

[Spangly Shiny]

On the other hand if you are

On the other hand if you are fitting your 25mm tyres onto a pair of  newer, wider rims the actual measured width of the tyre will be up to 29mm. In that case a 25-32mm tube may be considered more appropriate, especially on a tubeless ready rim where the well is deeper.

[Anonymous]

Thanks both
Thanks both

[StraelGuy]

Agreed, much easier to fit.

Agreed, much easier to fit.

[Nat Jas Moe]

In my experience I find that

In my experience I find that the 18-25 are esier to fit than the 25-32 as the larger inner tube I find is easier to pinch when fitting. So I would go for the 18-25, which is what I use as I have 25mm tyres.

 

[Author]

Replies