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Questions tagged [puncture]

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

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21 votes
6 answers
2k views

How do I fix a puncture?

I got a flat/puncture on my bike tube, how can I fix it myself without going to the nearest bike shop? What kind of equipment would I need?
Johan Dahlin's user avatar
  • 2,908
57 votes
13 answers
39k views

What type of tires can prevent goatheads?

We have a lot of goatheads1 in our area, and they have a tendency to do something like this to bike tires: Unfortunately, I ride a road bike (specifically a Kona Dew), so I have much smaller, thinner ...
Jared Harley's user avatar
  • 2,141
20 votes
7 answers
4k views

What is a good way to keep my tires from going flat easily?

Title says it all, how do I keep my bicycle tires from going flat easily? I live in an area with a lot of sharp stuff (think glass shards, nails, cactus, etc)...
studiohack's user avatar
14 votes
5 answers
23k 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 tyre....
Luke Halliwell's user avatar
11 votes
5 answers
3k views

Slow leak on front cruiser tire

I ride my cruiser to the supermarket and back, using either a trailer or a basket over the front wheel for carrying groceries. The bike has developed a persistent slow leak on the front wheel, and I'...
Goodbye Stack Exchange's user avatar
8 votes
4 answers
5k views

When does a Marathon Plus tire (not) need replacing?

I have Marathon Plus tires: 5 years old 15000 km bike stored indoors I'm getting more punctures than I used to, but maybe that's caused by my riding now on worse road surfaces than I used to. The ...
ChrisW's user avatar
  • 12.1k
32 votes
8 answers
12k views

Broken glass on the bicycle path, what to do?

Often I find myself driving with my racing bike on the dedicated bicycle lane in my city. The problem with these bicycle lanes is that there is a lot of broken glass (once every few kilometers). ...
Bernhard's user avatar
  • 621
27 votes
7 answers
64k views

How to get the tyre back on to the rim easily?

What is the best/easiest way to get the tyre back on to a rim after removing it to fix a puncture for example? Some tyres can be really hard to get back on to the rim. I don't like using the tyre ...
Piers Myers's user avatar
10 votes
10 answers
25k 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 situation:...
Bozostein's user avatar
  • 373
5 votes
5 answers
639 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 ...
jperelli's user avatar
  • 301
5 votes
3 answers
2k views

Mystery puncture -- caused by inner end of ice spike?

I had to change my back tube yesterday and couldn't find anything by eye or by feel on the inside of the tyre, by eye on the outside (it's a schwalbe winter so you can't find anything except its own ...
Chris H's user avatar
  • 59.7k
24 votes
7 answers
8k views

Which kind of tube valve is the best?

What kind of valve is the best one, a Presta valve (6mm) or a Schrader valve (8mm). Which has the best reliability, which one is easiest to fix a flat on?
Johan Dahlin's user avatar
  • 2,908
15 votes
3 answers
20k views

Is it normal for a presta valve to unscrew into two pieces?

I have a Continental Road inner tube with a threaded presta valve. I also have a threaded bike pump which I screw onto the valve to inflate the tube. When I try to unscrew the pump, the uppermost ...
David Tuite's user avatar
15 votes
2 answers
7k 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 ...
Móż's user avatar
  • 23.6k
14 votes
9 answers
54k 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 ...
Dale's user avatar
  • 549
12 votes
11 answers
18k views

Which puncture-resistant tires?

I commute on city streets and have had two punctures in 5 months: first a roofing nail, second a small shard of glass. Punctures are a nuisance. I've read some people recommend Schwalbe "Marathon" ...
ChrisW's user avatar
  • 12.1k
9 votes
3 answers
9k 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 ...
Benzo's user avatar
  • 18.2k
7 votes
1 answer
11k 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 ...
Baumr's user avatar
  • 1,585
5 votes
4 answers
7k views

Anti-puncture options

I ride my bike to work. But every time I get a flat tire, my schedule is messed up because bike shops are not easily available on my town. Is there any other option besides puncture-proof tires?
Noe Nieto's user avatar
  • 153
3 votes
1 answer
3k views

How much can a 700x23 inner tube stretch?

I recycled my dad's road bike (about 20 years left in storage) so I bought a complete set of new wheels. "Good" hubs and rims, not quality brand though but I've been told they're good and that's what ...
rMaero's user avatar
  • 71
2 votes
3 answers
4k views

Flat tire after inflating to max pressure

Bought a used mountain bike for mom. The bike wasn't used in quite a while . Mom used it for 3 weeks , tire pressure was ok but it needed some air. So I pumped air in both the tires to max ...
zennni's user avatar
  • 121
47 votes
12 answers
40k views

What are the disadvantages of "puncture proof" (or puncture resistant) tires?

Some people refer to tires that are more resistant to punctures as "puncture proof" tires. For example: Specialized All Condition Armadillo Tyre Even though these tires are not really puncture proof, ...
b.roth's user avatar
  • 1,817
32 votes
10 answers
38k views

Do glueless tube patches work as well as glue ones?

Quite a few years ago I tried some glueless patches for repairing my punctured tubes while out on the road, and found that they rarely stayed on for very long. I know that technology has advanced a ...
Anthony K's user avatar
  • 6,233
17 votes
8 answers
11k views

Mystery flat keeps happening 3-5 times a week. Do I weigh too much for my tires?

This is a little embarrassing, so I hope no one makes fun of me... But I am a big girl. I always have been. Very big frame, big shoulders, big head, hands and feet. My whole life I've been healthy and ...
rogue's user avatar
  • 275
15 votes
8 answers
7k 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 ...
Paul Weber's user avatar
  • 1,269
14 votes
4 answers
52k 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 ...
jimchristie's user avatar
  • 11.8k
13 votes
4 answers
9k views

How can I repair a tyre with a deep cut?

I have some foldable racing tyres, still with plenty of tread but with some small cuts through the tread & cloth. Can I do anything to them or are they destined for the bin?
Anthony K's user avatar
  • 6,233
9 votes
1 answer
21k views

Sudden tyre deflation with no puncture

At the start of my ride yesterday I was passing through town slowly and crossed a section of cobble stones (just a line running across the tarmac). I managed to hit the one cobble sticking out of the ...
rg255's user avatar
  • 1,097
9 votes
3 answers
824 views

Is this a puncture protection thing?

I got a vintage bike to commute with (I wanted a heavy one for the exercise) and I was hoping for a flat so I would have an excuse to spend money on a puncture resistant street tire to replace the ...
gcb's user avatar
  • 1,465
5 votes
6 answers
6k views

Should I use slime-filled inner tubes or anti-puncture lining?

My outer tyres were really worn and my inner tubes had 3 patches each (and still deflating) so I decided that I had to replace both. I have found some pretty nice outer tyres but as the place I ...
Hristos's user avatar
  • 53
3 votes
6 answers
3k views

I cannot go 30 miles without a flat. I can't figure out what the problem is

I have Mavix CXP-12 wheels (20mm). I have relatively new Freedom ThickSlick 23mm Tires on the wheels. I've been using these inner tubes: Meetlocks® 700x18-23c. I weigh 165 lb. I just keep getting ...
rjt_jr's user avatar
  • 199
2 votes
4 answers
1k views

Is a bigger wheel likely to get fewer flats?

Someone suggested recently that rather than using a fatter tyre in my search for fewer flats, I could use bigger wheels. Specifically, that switching from 700c to 27" (622 to 630) would make a ...
Móż's user avatar
  • 23.6k
2 votes
3 answers
368 views

Can Presta valves suddenly lose pressure?

I was doing my usual 15 mile round, about mile or two to go, when suddenly I realised my front tyre had gone flat. It has heavy duty, mountain bike style, valves. I haven't been able to find a ...
Richard's user avatar
  • 21
35 votes
6 answers
10k views

Why do bike tires suffer from frequent punctures whereas car tires don't?

I have driven in my life 200 000 km by car and 20 000 km by bike. In my car, I have never had a single puncture. In my bike, my puncture count probably exceeds 5. Why do bicycle tires suffer from ...
juhist's user avatar
  • 19.1k
28 votes
8 answers
124k 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 ...
TheOne's user avatar
  • 381
27 votes
9 answers
107k views

Am I too heavy for my road bike tires?

I am wondering if bike tires have a weight limit. I have to admit, I am a large guy at 6'3" 250lb (190 cm, 113,5 kg), and I have always had issues with my road bike's tires getting pinch flats. I ...
LoganGoesPlaces's user avatar
25 votes
3 answers
30k 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 tube....
Jonny Cundall's user avatar
22 votes
11 answers
9k views

How to find punctures in inner tubes?

When I have a flat tire, I find punctures in inner tubes using three techniques, all starting with the inner tube outside the bike: Hearing where the sound of air escaping originates. Feeling the ...
Santropedro's user avatar
21 votes
5 answers
2k views

What is the maximum number of pucture repairs an inner tube can take?

Any thoughts - my spare tube that I carry in my bag currently has a dozen or so patches on it, but still works fine. I'm tempted to keep going to see how many I can get on there until it get ...
Matt's user avatar
  • 337
15 votes
3 answers
2k views

What kind of flat is this?

I'm stumped. For the last yew years I have been getting flats that look like this: As you can see, it's a tiny, tiny hole that can only be found by inflating the tire to twice its size or so. I know ...
JKnight's user avatar
  • 253
15 votes
8 answers
7k views

How to stop dealing with flat tires?

I have a very nice fixie bike, which I keep suffering from flat tires. I live in Bogota which is a city full of potholes in the road. I have been examining options to implement in order to have less ...
unmultimedio's user avatar
11 votes
7 answers
10k 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. ...
Tanner's user avatar
  • 213
10 votes
5 answers
2k views

Schwalbe Marathon Plus recurring puncture - options?

Does anyone have any experience of using puncture resistant tyres when they have been cut so badly as the object pierces the tyre right through? Being Mr. Unlucky, 2-3 months ago I managed to get a ...
Bernard Tyers's user avatar
10 votes
5 answers
15k 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 ...
Dinesh P.R.'s user avatar
10 votes
5 answers
28k 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 ...
User1000547's user avatar
9 votes
1 answer
4k 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?
Stp30's user avatar
  • 193
9 votes
5 answers
25k views

Bicycle's inner-tube got puncture right next to the valve, How to patch it there?

There is a very small cut 1-2 millimeter or less long in the inner-tube, right next to where it's the bottom of the Schrader valve. The cut is only 1-2 millimeters far away from the valve's bottom. ...
Santropedro's user avatar
8 votes
5 answers
2k views

Frequent blow outs in the same location

I keep getting blow outs in my front tube and always in the same location: right next to the valve stem. The blow outs look like: On this same tube, there is wear on exactly the other side of the ...
carl's user avatar
  • 915
8 votes
5 answers
15k 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 ...
rsk's user avatar
  • 81
8 votes
5 answers
1k 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 blow ...
sixtyfootersdude's user avatar