Also called "flat". Ways to avoid punctures, deal with punctures, etc.

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9
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7answers
2k views

Repeat Punctures

I was cycling home today and I got a puncture a few minutes in where the air slowly drained rather than instant rim to concrete! Fitted a new tube and 10 minutes further down, exact same issue. ...
3
votes
3answers
4k 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 ...
11
votes
3answers
18k views

How do you fix a puncture on tubeless tires?

I recently got a new bike with a set of tubeless compatible rims. The stock tires are clinchers with tubes. I'm thinking about putting tubeless on there, but I don't have any experience with them. We ...
1
vote
1answer
111 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 ...
11
votes
2answers
1k views

What's the best technique for removing a tyre from the rim?

This question talks about fitting a tyre back onto a rim, but I'd like to know how to get the tyre off in the first place. Especially if the tyre is very tight, or the dip in the middle of the rim ...
4
votes
2answers
287 views

Pinch flats: hardtail vs full suspension. Differences?

I ride a hardtail, and I wonder if a full suspension prevents pinch flats in the rear wheel. I don't get pinch flats; but I want to know what to expect from a hardtail vs full suspension. I'm a heavy ...
4
votes
4answers
848 views

Puncture-proof 20" tires? [closed]

A friend is about to buy a second-hand Dahon Vitesse D7HG with the usual 20" wheels. Since she knows nothing about bike mechanics, doesn't want to learn, and that bike has a Nexus 7 hub gear system, ...
3
votes
3answers
233 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 ...
5
votes
2answers
285 views

Does riding on the sidewalk make it more likely to get a flat tire?

I just started bike commuting, and the two times I've gotten flats were when I was biking on the sidewalk, and in both cases they seemed pretty random. I use a mountain bike. Is it just a coincidence ...
8
votes
5answers
972 views

Fix / clean or throw away tire with 30+ thorn punctures?

I recently rode through a horrible thorn patch. I came out with 2 flat tires. Upon examination, I found that the tube was punctured in 10+ places. Throw away. The tire has 30+ small thorns in it. ...
0
votes
1answer
128 views

Road bike getting punctured often on poor roads [duplicate]

I brought my road bike to Mumbai where the roads are pretty bad (lots of potholes, gravel...), I've been getting a puncture roughly every 2 weeks. The tires are about 6 months old. They are a bit worn ...
0
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7answers
4k views

Are there road bike tires invulnerable to popping?

I am a mountain biker now living in Minneapolis and so I bought a road bike, but I can't keep tires on it to save my life. I 'upgraded' to Continental Attack/Force tires, got a glass shard in the ...
4
votes
3answers
248 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 ...
5
votes
1answer
3k views

What are pinch flats?

Also known as a snakebite or pinch cut, a pinch flat is a common term among the bicycling community for a certain type of puncture — but what exactly defines one? What causes pinch flats? What helps ...
3
votes
1answer
154 views

Rim cement as a replacement for rubber cement

Can I use aluminium rim cement for patching flat tire instead of using rubber cement?
8
votes
5answers
11k views

Is there anything I can do to prevent snakebites (pinch flats)?

Riding in an urban setting, I've lost two tubes in the last week to snakebites, and it's easily the most common way for me to get a flat. I've got Gatorskin treads, which help prevent standard ...
1
vote
2answers
220 views

Continental 4Seasons vs 4000S

I am currently riding Conti GP4000S tyres, in 700x23mm version, inflated at 115 psi. The grip is great, the (light)weight is amazing. I have punctured twice with them (in 1500 km) which is more that ...
8
votes
3answers
2k views

What is the purpose of the rubber stripe between the wheel and the air chamber?

I had a flat tire and replaced the air chamber. While doing that the rubber stripe that stands between the wheel and the air chamber ripped and it's no longer a ring. It´s hard to put it correctly and ...
14
votes
6answers
4k views

Why do I always get punctures in my rear wheel?

I get probably five times as many punctures in my rear wheel as opposed to my front wheel. I run a good pressure and don't get obvious pinch flats. Does anyone have a logical reason why this could ...
2
votes
4answers
5k 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
4k 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 ...
2
votes
1answer
228 views

Patched inner tube helped by pressure against tire?

When I patch a tube, does it need to be in a tire to "remain fixed"? I mean: I understand an empty fixed tube will remain fixed if I keep it folded in a box... But how about with air inside? does ...
2
votes
3answers
232 views

“wound” on the tire side

The other day I was stopped at a traffic light when I felt my bike moving slowly forward. Did not pay really attention, thought there was a slight slope, so hit the brake and voila. But it did not ...
2
votes
4answers
8k 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 ...
2
votes
4answers
252 views

What steps should I follow to patch a tube?

I was wondering if I'm missing something when I patch my wheel, because I patched it yesterday and it had low pressure today. This is what I did: Released the air Used 2 screwdrivers to remove the ...
7
votes
2answers
2k 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 ...
2
votes
4answers
8k 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 ...
7
votes
4answers
8k 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, ...
1
vote
7answers
335 views

avoiding punctures in 22mm tires

I used to get a lot of punctures on my 22mm tires riding to work every day in boston. All of the punctures were from small pieces glass. After a few weeks of almost weekly flats i got tuffy tire ...
13
votes
7answers
43k 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 ...
8
votes
1answer
2k views

Do narrow tires puncture more frequently?

Does a narrow bicycle tire puncture more often, or does it requires more attention regarding its maintenance and servicing?
4
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3answers
3k views

Best practice for patching snakebite pinch flats on skinny tubes

So, I tend to run 700x23c or 700x25c tires on my commuter bike. Sometimes I'm lazy and forget to check the air pressure and inevitably get a pinch flat when I hit some stationary object, pothole, or ...
9
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3answers
4k views

Is it a good idea to get a narrower front tire and a wider rear tire on a road bike?

I am currently running Continental Grand Prix S 4000 in 23-622 / 700x23C front and rear. I am about to buy a new set of tires for my road bike and am fancying a smaller tire for the front and a wider ...
5
votes
1answer
274 views

Unused puncture repair patch - what's its useful shelf life?

Sometimes I fish around in my shed for a repair kit and pull out a pair of patches which have been sat around for a while (a year?) I find the patches are stiff (even though they're still in their ...
6
votes
4answers
9k views

How To Prevent Holes Around The Inner-tube Valve?

In the last two months I have experienced something new: three inner-tubes (700X25) have popped with holes immediately around the valve and on the same side of the tube as the valve. I suspect there ...
10
votes
9answers
10k views

Why does the glue in a puncture repair kit dry up so quickly?

With puncture repair kits, generally you get like 6-8 patches and a tube of glue. The only problem is I can really only use the glue for the first patch because once it opens, it just ends up drying ...
13
votes
7answers
2k views

Fixing a flat - how to find the piercing object?

Just had a flat and having problems finding the thing that pierced the tube in the tire. Normally I just run my fingers around in it, until I found it, but this time everything looks O.K. My ...
2
votes
2answers
386 views

Trouble removing a(n old) 700x23c tire

I've been riding an early 90's Italian steel timetrialer (D'accordi TT0.9) for a few months, front tire has a slow leak that needs to be replaced. The problem is that I can't get the bead totally ...
5
votes
1answer
3k views

Flat tire: white liquid inside the tube

I got a flat tire, kind of a big hole in the inner tube. It was raining a lot so I walked home through the rain and water puddles, and everything got wet. Now I want to patch the inner tube, but ...
1
vote
1answer
422 views

How could I have fixed a flat tire?

My tire was flat and I could not fix it, so I had to carry the bike all the way. How could I have fixed it?
7
votes
9answers
7k views

I keep getting flats

I have been getting flats every 20-30 miles for the last 2 months. This has caused serious inconvenience to me, as bicycle is my preferred mode of transport to work and class. Details of the ...
8
votes
4answers
6k views

Are there other explanations for slow tyre pressure loss?

I rode my road bike on Friday and the tyres were at the correct pressure then, around 100psi. On Tuesday, I jumped on without checking them and quickly realised something was wrong with the rear ...
3
votes
5answers
2k views

Do tube protectors increase rolling resistance or just add weight?

I have been experiencing a lot of flats lately (proportional to the increase in time/distance I have been doing), so I am thinking of adding a tube protector (e.g., one of these) to each tire. Will ...
3
votes
5answers
268 views

Frequent flats with Michelin Pro3's

Since switching from the Michelin Pro2's to the new Pro3's I've experienced an increase in puncture flats. Nothing has else has really changed in riding style or conditions. The Pro3 ride much ...
6
votes
2answers
2k views

Recurring flats

I've had 4 flats in three rides, all rear wheel. I can't see anything in the tyre, the tyres relatively new, the rims look good. Needless to say I'm getting pretty hacked off with having to keep ...
15
votes
7answers
3k views

Is there a recycling program that accepts unrepairable inner tubes?

The local bike shop, not the wealthiest operation, has a pile of dead inner tubes growing on the floor. I'd love to discover something where used inner tubes are repurposed, melted down, made into ...
8
votes
5answers
335 views

How do you deal with flats in the winter?

I was lucky last winter I went the entire winter without getting a flat. I attribute it mostly to: sharp items on the road being hidden under snow and ice less agressive riding resulting in no ...
5
votes
3answers
684 views

Damaged rim or just the tube valve?

I had a flat on the way to work today. Not really earth shattering, it was about 5 miles in, only a short walk until the office, where I could fix it in comfort. But walking the bike, I noticed an ...
11
votes
3answers
4k views

How do I use the plastic backing on patches?

It seems that the patches I buy for fixing inner tubes come in one of 2 types. Both have metal foil on the stick-to-tube side. One has paper on the other side, the other plastic. With the paper ones ...
16
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3answers
10k views

What's the rubber tube in my puncture repair kit for?

I've got an old school puncture repair kit, the type with glue and patches. As well as the sandpaper, patches, 'vulcanizing fluid' and instructions, there is a 2.5cm long, 3mm wide, beige rubber ...