Different width tyres?
- Thread starter J1888
- Start date
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Pale Rider
Legendary Member
You might find it a bit harder to fit the existing stretched tube into the narrower tyre.
S-Express
Guest
What are your tubes made of? Mine are butyl and return to their original size when deflated.
I hadn't thought of that, but it's a new tube too, so that's thankfully not an issue.
Pale Rider
Legendary Member
Job should be a good 'un.
The problem I had was getting a tube used in a 2" tyre into a 1.75" tyre.
Proportionally a bigger difference than your case, but if I were ever dropping a tyre size again, I would buy a new tube to go with it.
Yellow Saddle
Guru
- Location
- Loch side.
I have never come across a tube that takes on a new size after inflation.
mjr
Comfy armchair to one person & a plank to the next
- Location
- mostly Norfolk, sometimes Somerset
Funny you should say that... are you stalking me?
It's not quite the same, but one of two strange new things I suffered last week was a tube that seemed to have taken on a new, larger diameter after a puncture or rather a series of punctures - the other strange new thing was a sharp object getting between rubber and casing, leaving a bubble in the tyre that it could hide in and then pop through the casing and cause a new puncture, which was rather annoying and left me pushing the bike home after a series of failed repairs. Anyway, I've no idea how a tube ends up longer, I don't remember seeing it ever before and it really was the correct size when it went in.
Anyway, back to the original question: no, no problems, especially not with only 2mm difference. I'd usually put the wider on the back. One of my bikes currently has 28mm front and 37mm rear, to try to give a nicer ride without stuffing the handling... not entirely successfully, though
davidphilips
Phil Pip
- Location
- Onabike
why not just take the tyre back and see if shop will exchange it for a 25mm.
Ajax Bay
Guru
- Location
- East Devon
mjr
Comfy armchair to one person & a plank to the next
- Location
- mostly Norfolk, sometimes Somerset
I usually stop short of patching patches (but it has been known) but the tube did have at least six. It's raining and I'm not going to the shed to look!
Yellow Saddle
Guru
- Location
- Loch side.
Funny you should say that... are you stalking me?
It's not quite the same, but one of two strange new things I suffered last week was a tube that seemed to have taken on a new, larger diameter after a puncture or rather a series of punctures - the other strange new thing was a sharp object getting between rubber and casing, leaving a bubble in the tyre that it could hide in and then pop through the casing and cause a new puncture, which was rather annoying and left me pushing the bike home after a series of failed repairs. Anyway, I've no idea how a tube ends up longer, I don't remember seeing it ever before and it really was the correct size when it went in.
Anyway, back to the original question: no, no problems, especially not with only 2mm difference. I'd usually put the wider on the back. One of my bikes currently has 28mm front and 37mm rear, to try to give a nicer ride without stuffing the handling... not entirely successfully, though
Check your rearview mirror. See those lights....
I've abused a few tubes in my day in an effort to force them to reveal the slow puncture. Usually they end up looking like a python digesting a goat but return to nice slender vine snakes once the air is released. I'm off to the shed right now to inflate the bejeezus out of one and I'll leave it overnight. Let's see what happens. This would exaggerate the notion of a 23mm tube inside a 25mm tyre taking on a new size.
Each time I inflate a tube without a constricting tyre I marvel at how the diameter and length of the tube increases but tyres (essentially high pressure hoses) don't do it thanks to those cords inside crossing at exactly the right angle. Get the angle wrong by half a degree and your tyre chances diameter with inflation.
Anyway...I'm with you on patching patches. I only discard a tube if the valve stem detaches or I really botch a patch on a patch on a patch.
Nigelnaturist
Guru
- Location
- Pontefract
@J1888 what @S-Express says did that for some 6 or 7 thousand miles.
Just a quick comment, should be no problem to run the 23mm front, 25mm back, with the caveat that your internal rim width is sufficiently narrow to run 23mm tires safely. Check your rim specs, my wheels for example are 17mm internal width, and recommend a minimum 25c tire.
