Tubes

[ME 109]

Thought that'd grab your attention!

In an effort to fit more beer save room for important things like food, I'm only putting an 18" tube in my luggage as a spare.
Lots of times people have posted about using an 18" tube for the front 19" as well, for the purpose of getting out of trouble.

Fact or fiction? Will it work?

[Kurt in S.A.]

My thinking is that putting a 19" tube into an 18" tire means there's the possibility of folds that will lead to failure. Stretching an 18" tube to fit the larger tire seems like a better option.

Kurt in S.A.

[chasbmw]

If you have a front wheel puncture, then you may need more than just a tube to get you going again.

Rear wheel is more survivable, so take an 18 inch tube..

[Ken in Oklahoma]

I think an 18" tube with the cross section for the narrower (front) tire would be just the ticket. I would have no hesitations myself.

We have all blown up inner tubes looking for a leak. The tube expands handily both in diameter and cross section--to a gross degree if you pump in a LOT of air. Observing this, intuitively, we "know" that the tube would hold a hell of a lot more air than that before it would pop. And even then the pressure would be, what, 5 psi?

How can the tube not work well for a few hundred miles to get home?

Now having approved of your idea, all of the advice I've seen written about the necessity of using exactly the right size tube for the tire is not lost on me. But the tube/tire manufacturers who might say otherwise won't do it. The specter of loosing your ass in a wrongful death or injury lawsuit will seal their (metaphorical) lips as surely as sinew.

Editing: Oh, I better throw in a bit of modesty here. Ready?

I don't know everything.

There, that ought to do it.


Ken, modest in Oklahoma

[Garnet]

I have installed an 18" tube in a 19" tyre at some time in my cheap airhead past.

I don't recall any problems. I don't remember much, actually.

[Garnet]

Or, as you have flakes, you could go without tubes!













Haven't had a good oil tubeless thread for a while.

[richard t]

I think an 18" tube with the cross section for the narrower (front) tire would be just the ticket. I would have no hesitations myself.

We have all blown up inner tubes looking for a leak. The tube expands handily both in diameter and cross section--to a gross degree if you pump in a LOT of air. Observing this, intuitively, we "know" that the tube would hold a hell of a lot more air than that before it would pop. And even then the pressure would be, what, 5 psi?

How can the tube not work well for a few hundred miles to get home?

Now having approved of your idea, all of the advice I've seen written about the necessity of using exactly the right size tube for the tire is not lost on me. But the tube/tire manufacturers who might say otherwise won't do it. The specter of loosing your ass in a wrongful death or injury lawsuit will seal their (metaphorical) lips as surely as sinew.

Editing: Oh, I better throw in a bit of modesty here. Ready?

I don't know everything.

There, that ought to do it.

Ken, modest in Oklahoma

You in OK or I D Ho? We're headed to McAlister for weekend event with my PGR friends.

[Duane Ausherman]

Works great. I once had to stuff a tractor front tire tube into my R67/3 rear tire. It folded over several times and it got to home, over 1000 miles and a week. Changed it quickly and the folds were so obvious, but it worked.

[Zombie Master]

Rear flats are more common. When I'm only packing one tube I take a front, it will work in the rear as a temporary fix.

[chasbmw]

Rear flats are more common. When I'm only packing one tube I take a front, it will work in the rear as a temporary fix.

That's not very logical?