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Reasons For A Recurring Flat Tyre

November 25th, 2014 | by Events Staff
Reasons For A Recurring Flat Tyre

Do you keep getting flat tyre after flat tyre? It’s possible that you keep getting punctures from new sharp things poking through the tyre, but that’s unlikely. There’s probably something wrong with your tyre, wheel or the way you are putting a new tube into the tyre. These are the things that could be causing your recurring flats and how to fix them.


Reason 1: Something sharp is stuck in the tyre.

The problem: If you don’t remove the object that poked the hole in your first tube, it will probably poke through the replacement tube as well.

The fix: After getting a flat, inspect the outside of the tyre for the offending object. Pull out any shards of glass or other sharp things that are stuck in the tyre. Next, run your hand along the inside of the tyre to check for small items that are poking through. The tyre is ready for a new tube once you have removed all the sharp things from it.


Reason 2: Your tyre is worn out.

The problem: If the tyre rubber is extremely overused, the threads – fibers that make the backbone of the tyre – can be exposed. When that happens, the tyre is much more susceptible to tearing and puncture. If the casing does tear, flat protection is reduced and the tube can stretch beyond its usual dimensions. Both of these cases can lead to flats.

The fix: A tyre is dead once the threads are exposed. Switch it. You will be better off changing the tyre well before it gets to that point. Swap your tyre when the rubber at the crest starts to crown and looses its round shape. Your rear tyre will always wear faster than the front, but swapping them both at the same time is the best practice.


Reason 3: The tube is getting pinched while it is being changed.

The problem: If the tyre gets poked with the lever or caught between the tyre and the brake track, it can puncture before it is even inflated.

The fix: Inflate the new tube a tiny bit so it holds its round shape before you put it on the wheel. Pass the valve through the valve hole and then press the tube in between the brake track walls so it sits in the wheel. Do not allow any part of the tube to rest outside the brake track while reinstalling the tyre. Once the tube is seated in the wheel, use your hands, not a lever, to snap the tyre back on the wheel. If you use a lever to lift the tyre onto the wheel, the lever itself can swing around and poke a hole in the tube by pinching it against the metal sidewall. Re-seating the tyre with your hands eliminates that possibility.


Read more of this article on Triathlete Europe by clicking here

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