A rubber torus shaped balloon which is inflated via a valve inside a tyre to keep it rigid.

learn more… | top users | synonyms (2)

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1answer
90 views

What does vulcanizing solution in patch kits consist of? Can I buy it?

I have a pile of old patch kits for inner tubes that are complete except for the little tube of "vulcanizing solution" that comes in patch kits. With time, these tubes crack, or have a cap fail to ...
1
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3answers
127 views

Do I have too much chafer strip showing after fixing a puncture?

I have had two innertubes explode on me on my bicycle, on the same wheel and tire. The first time I was inflating my inner tube after aquiring a puncture. On this occassion I was pumping my tires ...
3
votes
1answer
281 views

installing a 700-18-23C tube on a bicycle

When installing a 700-18/23C tube, does the nut on the valve stem go inside the tire (unseen once the tire is on the wheel rim) or outside the rim (so it is seen among the spokes)?
1
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3answers
123 views

Cycle tyre and tube burst

I pumped my cycle front tyre to 105 psi (700*23c) 5 days back and cycled some 60 km on the same day without any punctures. Afterwards I parked the cycle in my bedroom for the last 5 days (due to ...
2
votes
1answer
120 views

What size of slick tire should I buy?

I purchased a mountain bike and I ride on the road most of the time and I was looking at slicks for my bike. My tire size that I have now is 26x2.00 and the rims. I have on are AT-550 26inch what size ...
2
votes
1answer
50 views

Dawes Super Galaxy - Tubes

I picked up a near new Dawes Galaxy that had been in storage for 8 years. I'm super excited to get on a tour. I have both Lands End to John O'Groats and London to Paris locked in:) The tires are ...
2
votes
3answers
118 views

Why would each patch produce a new leak before resintalling tube?

I got a puncture in my tube (size 700c x 23c, Kendra, came with bike) and applied a vulcanizing glue and patch, then checked it. Before reinstalling the tube, there was now a new leak right next to ...
19
votes
1answer
541 views

What are the effects of completely filling tires with water instead of air?

As absurd as it sounds, I was curious as to how a bike would handle with the front tire filled with water. I wonder if steep hill climbs would be easier (particularly for a mountain bike): 1) to ...
4
votes
2answers
100 views

Why would tube patch sometimes peel off with backing?

Sometimes, when patching a tube, the newly placed patch will peel off when removing the backing. Sometimes I have this problem and sometime I don't and I'm not sure what the difference is. Is it the ...
8
votes
1answer
288 views

Benefits of latex tubes… Are they worth it?

Is using latex inner tubes worth it? My use of it would be on a racing bike, for training and racing purposes, only on road, mostly in good condition (but in an urban environment so there are some ...
2
votes
3answers
300 views

Best way to patch road bike tubes

I've scoured the internet for this answer, as I recently just tried to repair a tube on my Purefix fixed-gear bike which I assume uses tires and tubes similar to road bikes, as the tire size is ...
1
vote
1answer
72 views

mountain bike switching tyres I get a puncture, why, am i doing something wrong?

I have a mountain bike with 2 sets of tyres, a road set and off road set, when I switch between them about 1 in 3 times I seem to get a puncture, and I can't see why? I've gone though 4 innertubes ...
3
votes
1answer
783 views

Deformed wheel/tire/tube, how to diagnose or repair?

My bike has a deformation in the rear wheel, almost surely not due to the rim. You can see the defect in this video. I'd like to understand if I have to replace the tire and/or the tube. I checked ...
2
votes
2answers
231 views

Leaking Slime inner tube valve after opened for first time since install

I put some extra air in my rear mountain bike tyre yesterday. It uses the SLIME inner tube. It wasn't flat nor had a puncture, I was just topping it up to make the tyre a bit harder. I cycled to work ...
8
votes
10answers
955 views

Any alternative use for old mountain bike tyres and inner tube?

I have recently changed the original tyres and inner tube of my 15 year old Specialized Rockhopper. They were starting to deteriorate and I got punctures almost every time I took it on gravel paths. ...
3
votes
3answers
149 views

What are these diagonal marks on my innertube?

I'm on my second inner-tube in as many weeks and the culprit seems to be the same between them; these diagonal marks on the side around the whole of it—but only on one side (sorry, didn't make a ...
4
votes
2answers
168 views

How many times to patch a tube before dumping? [duplicate]

Related: Patch or replace tube? This video asserts that: A properly patched area of a tube is stronger than intact tube area Never patch a tube more than 3 times Those are seemingly ...
4
votes
2answers
376 views

How to Patch a Bike Tube?

Related (but more general): What steps should I follow to patch a tube? I have done this more than a hundred times, but am still not sure what are the correct steps. Here they show to put glue ...
1
vote
1answer
269 views

Storing spare tube under saddle bag

The saddle bag I own has two elastic loops on the underside. From reading this question on long-term storage of tubes I can see tubes don't like changing temperatures (not really a problem in Ireland ...
4
votes
3answers
145 views

Can small pebble inside tire puncture the tube?

Shortly after changing a flat in a dirt road near home, I got another one. This last tube got a very small puncture. Inside the tire I also found some small pebble (like 1mm or less in length), but no ...
1
vote
1answer
153 views

What type of tires have tubes inside?

Don't judge me as stupid just yet, I'm not sure if mine's a tubular or tubeless tire but everyone says tubular tires are glued to the metal wheel. However, mine isn't. It consists of a smooth, ...
3
votes
1answer
86 views

Rim cement as a replacement for rubber cement

Can I use aluminium rim cement for patching flat tire instead of using rubber cement?
9
votes
3answers
347 views

What happened? tube blew the rim?

Had a puncture today, removed the tube, patched it and made it home. Obviously since I only have a mini-pump I could not inflate it to my 8 bar usual pressure. When home, I took the wheel upstairs to ...
-2
votes
3answers
549 views

exploding inner tubes [closed]

Once is happenstance, twice is a coincidence... I just patched my inner tube, rode the bike a bit, parked it in the sun, and about an hour later --BOOM! the tube exploded tearing a 4" gash near the ...
0
votes
2answers
207 views

Should I get a 18/25 tube or a 25/32 tube? [duplicate]

I have a 25mm size tyre and I'm ordering some inner tubes on the net. So far, I seem to have a choice between either the 18/25 range or the 25/32 range. Both would fit but would one size be better ...
5
votes
3answers
319 views

What factors influence the maximum tire pressure other than the tire itself?

On the tires of a bike, there is a label which shows the maximum allowed pressure for it. However, I am wondering if there are any other factors that affect the maximum allowed pressure in a tire? ...
3
votes
1answer
1k views

Complete beginner's question: inner tube too big?

My tire wall tells me that my tires are 26 x 1.95. I bought a 26 x 1.75-2.15 inner tube. When I change the inner tube, though, the tube is bigger than the wheel by two inches. How do I determine inner ...
5
votes
2answers
5k views

I have 27 inch wheels and need new inner tubes what size can I use

I have 27 x 1 1/4 inch tires on my bike and need to buy new tubes. Can I use 700c or just 27 inch?
1
vote
1answer
515 views

What inner tube do I need for this tyre?

Can anyone tell me what spec inner tube I need for this tyre? I discovered the one I'd previously bought didn't look fat enough when I got my first puncture with it the other day, now I'm in the ...
3
votes
2answers
1k views

Can I use a shock pump to inflate a tube?

I know that shock pumps are meant for high pressure applications so that they can withstand high pressures needed by suspension shocks. However, can I use a shock pump to inflate my tire in a pinch ...
0
votes
3answers
151 views

Leak only inside the tire

I have a tube with a Schrader valve, previously repaired (twice). I needed to use it, so I inflated it by hand until it ballooned to 2x the size, search for leakages in water (valve too) and let it ...
1
vote
2answers
356 views

Are 28 / 47 - 622 / 635 tubes ok to replace my 28 / 44 - 622 ones?

I recently got my first flat on my Cube hooper It has 37 - 622 (28 x 1.40 - 700 x 35c) schwalbe tyres on it. I ordered the new tube online before pulling the old one off, picking what I thought were ...
0
votes
2answers
1k views

Life expectancy of a cycle tube and tire?

Can anyone please let me know the life expectancy (no of km or time period) of a cycle tube and tire? Let us consider different cycles (MTB Hybrid Roadbike) and different terrain (off-road slightly ...
2
votes
4answers
1k views

Cheap alternatives to avoid tire punctures

If you head to Walmart and see the slime bike liners for in the tire to stop goatheads and small nailes from actually running the tire. Is there anything around the house or shed that can be used ...
4
votes
3answers
1k views

how to repair large holes in inner tubes

I find that any hole, cut or tear larger than a pinprick is impossible to repair with normal patches because they are too soft. Even a 2-3mm slit will cause the repair patch to balloon out and burst ...
6
votes
1answer
820 views

Picking spare inner tube size

My daily rider is a Schwinn MTB with 26" wheels/tires. Specifically the tire size is 26x47/52. On the inner tube there's a label that reads 26 x 1.90-2.125. I'd like to purchase a few spare tubes in ...
3
votes
6answers
3k views

Why do my tires keep losing air, even after having the tubes replaced?

I had a problem a few weeks ago where my tires were flat and needed air every time I took my bike out of the garage. I brought it to the local bike shop, and they replaced my tubes. This made a ...
1
vote
4answers
3k views

Which MTB Inner Tubes

I have tried a few brands of inner tubes for off road riding, mainly slime and dr. sludge but recently I have suffered more punctures than I'd care for despite the 'green goo'. My question is what ...
4
votes
4answers
749 views

How should I store inner tubes to maximize their shelf life?

The LBS's in my area tend to have major sales around the same time once or twice a year. During this time, I can get replacement tubes at about half their normal price. I can buy several tubes, enough ...
1
vote
3answers
236 views

Storing an inner tube

I got a spare inner tube with my bike, which is good. I checked how it was packed and found it was sticking somewhat when I pulled it out of the box, which I can only imagine is bad. Would it be ...
8
votes
4answers
2k views

Does the inner tube affect the maximum PSI?

If I have road tires that have a recommended pressure of 110 PSI and maximum of 120 PSI can I safely pump my tires up to that level or does the inner tube effect the maximum? I currently have the ...
4
votes
3answers
473 views

Is it normal to wear out the rear tire with in a few months when using a trainer?

Early this year I attached my bicycle to a trainer, around the December time frame of 2011. The rear tire and inner tuber where shot by March of 2012. Riding about 24 Miles per week. Is this normal ...
3
votes
2answers
1k views

what is the ideal presta tube valve stem length

I have noticed that presta tube valve stems come in various lengths. I always assumed the longer valve stems were to allow the use of deeper aero wheels. Why is it that many wheels in print ads seem ...
2
votes
2answers
807 views

What does A/V mean on an inner tube package?

I've got a bike tire that says "(32-630) 27 X 1 1/4" on it. I've got also got an innertube that says "700X18/23C -27X1 A/V". I'm trying to figure out if the innertube is the right size for the ...
5
votes
2answers
631 views

Relationship between punctures and tube pressure

What could be the relation between a bicycle's inner tube getting punctured and the pressure of the tube. Are they directly proportional? I.e, if the pressure of Bicycle tube is higher then it has ...
4
votes
4answers
211 views

Which tube size to prefer if several options apply?

I have 40-622 (a.k.a. 28x1.5") tires, and Schwalbe offers two different sizes of tubes - their models "17" and "19" - as applicable for that tire size. Ok, either one would surely fit well. But ...
2
votes
3answers
3k views

Tube constantly getting punctured near the valve

I have been using my bike for a few years now, and for the last month i am constantly getting this problem. After riding a day or two, it looks like my tube gets rotated a little inside the tire, and ...
6
votes
5answers
2k views

Is there a way to completely deflate a tube?

I had a flat tire and replaced the tube. I just didn't realize that the tube was a thorn-proof tube when I bought it. It was the only spare one I had, so I used it anyway. Just now I replaced it with ...
7
votes
4answers
1k views

If I can't find the hole causing a flat tire, do I need to replace the tube?

My back tire got flat. If I pump it up now, it can hold the air for about 30 minutes to an hour before it's totally flat. I took out the inner-tube yesterday, pump in a bit air and put it into water, ...
10
votes
7answers
9k views

When should you replace tires after getting a flat?

A nail punctured my rear wheel tire today while riding. My question is, how do you know if you need to replace a tire or simply repair it with a tube repair kit? The hole looks pretty nasty. The cap ...