By David Fiedler
You ever hear someone talk about getting a pinch flat? It's a different situation from where you run over an object like a nail, piece of glass or wire that actually punctures your tire. (Though these types of punctures are quite common for anyone who cycles with any regularity, there are easy ways to reduce the number of flats you get from these causes.)
A pinch flat is when you hit a sharp edge with your __bike tire had enough that it presses and pinches your inner tube against your rim hard enough to perforate the tube and cause a flat tire.
A pinch flat is distinctive because there are usually two small holes side-by-side in your inner tube in a snakebite pattern. This comes from the two parts of the rim where the tube has been pressed against it.
Of course, if you get a pinch flat, the next thing that you'll need to do before you can resume riding is to fix your flat tire.
A pinch flat is much more likely when your tires are under-inflated.
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Hitting potholes or crossing a railroad track are common causes of pinch flats because of the crisp edge that can pinch the tube when struck.
Certain types of bike tires are more vulnerable to pinch flats. Skinny road bike tires, for obvious reasons, are more prone to getting pinch flats. Despite their very high air pressure, the fact that there is simple so little tire there to protect the tube from getting pinched against the rim makes pinch flats happen more frequently, even when they are properly inflated.
To ensure that your bike tires are are properly inflated, there are several steps you will follow:
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