Why Does My Bike Tire Keep Going Flat? [13 Reasons]

The bike tire is designed to keep the air inside, but there are some factors that can cause air to leak out. This article will explore what causes a bike tire to go flat and how you can prevent it from happening.

One of the most common reasons for a bike tire going flat is over-inflation. If you inflate your tires too much, they will not be able to hold the air inside and will eventually go flat.

The other reason for a flat tire is when an object punctures the tube, which then gets all of the air out and creates a hole in your tire.

Reasons Why My Bike Tires Keep Going Flat

When bike tires start to go flat, it is usually because of a puncture or a leak. These are two common problems that can cause serious inconvenience to cyclists. However, there are other possible reasons why bike tires might go flat.

Here are 13 reasons why your bike tires might be going flat:

  1. The tire is not properly inflated
  2. The tire is over-inflated
  3. The rim is bent or damaged
  4. There is an inner tube leak.
  5. The tire has a puncture
  6. There is a slow leak in the tube
  7. There slow leak in the valve stem
  8. The valve stem is loose or broken
  9. The valve is not seating properly
  10. There’s a slow leak in the valve stem sealant
  11. There is a cut caused by a sharp object
  12. Damaged rim tape or ripped
  13. Poorly-maintained Bike

How Often Do Bike Tires Go Flat?

On average, bike tires go flat about once time every 2 to 3 months. It is estimated that a tire will go flat about every 6-12 months. The most common reason for bike tires going flat is due to the air being displaced from the tire. This can happen because of punctures or just because of normal wear and tear.

Why Does My Bike Tire Keep Going Flat

How Do I Stop My Bike Tire From Going Flat?

Bike tires can go flat for a number of reasons, but it’s important to know how to prevent this from happening.

Here are some things you can do to avoid having your tire go flat:

  • Avoid riding on roads with potholes or cracks in the concrete.
  • Always check your tire pressure before every ride.
  • Keep the wheel away from any objects that could damage it.
  • Use talcum powder on the tube’s rubber surface. This will reduce chafing on the rubber surface and keep your tube from going flat.

How To Fix A Bike Tire That Keeps Going Flat?

In order to fix a bike tire that keeps going flat, you need to know what causes it in the first place. There are two possible reasons why a bike tire goes flat: 1) The tube has punctured or 2) The valve stem has come loose from the rim.

A bike tire that keeps going flat is a nuisance that can be fixed in a few simple steps.

  • Step 1: Check the tire pressure.
  • Step 2: Make sure that the tire is not damaged in any way.
  • Step 3: Make sure that there is no foreign object in the wheel or on the rim.
  • Step 4: Inspect the wheel for any cracks or tears in the tire casing or rim edge, which can cause a flat spot on your wheel and could lead to a flat tire again later on if not repaired properly.
  • Step 5: If you’re still having issues with your bike, unscrew the tire from the wheel and remove the tube
  • Step 6: Remove any burrs or sharp edges on the rim
  • Step 7: Clean and lubricate the rim with liquid soap (or water) and a soft rag.
  • Step 8: Apply a thin layer of sealant on the inside of the tire using an old toothbrush, then let dry overnight
  • Step 9: Use talcum powder on the tube’s rubber surface to reduce chafing on the rubber surface and keep your tube from going flat.
  • Step 10: Re-install the tube in its proper place on the tire.

Why Do Bicycle Tires Go Flat When Not In Use?

Bicycle tires go flat when not in use. This is mainly due to the permeability of the tubes that are used for bicycle tires. The tubes lose their ability to resist air leakage and this causes them to lose their pressure over time.

Bicycle tires are made of rubber and they need air to maintain their shape and keep rolling smoothly. When you store your bike with the tires inflated, the air inside them will slowly be released as they lose pressure with time.


In conclusion, it is important to note that a bike tire is not a permanent thing and will require maintenance. This includes checking the air pressure and replacing the tube as needed.

If your bike tire keeps going flat and you don’t know why check out our next article on why your bike tire keeps going flat but with no puncture. Just click here!

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Hi, I'm the initiator and writer of this blog. Bikes were and will be my first love, and my favorite hobby, that's why I decided to start this blog and write about my discoveries and techniques to improve my bikes or repair them.

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