Skip to content
Home » Blogs » Why does my back bike tire keeps going flat

Why does my back bike tire keeps going flat

Are you scratching your head over why your back bike tire keeps going flat? This can be due to a myriad of reasons, from punctures and valve stem damage to low tire pressure. In this blog, we’ll delve into the top causes for flat tires, provide step-by-step solutions for addressing them, and offer preventative tips to stop them from recurring.

Key Takeaways

Here are some various reasons why your bike keeps going flat:

  • Sharp objects like nails or glass stuck in the tire can cause it to go flat.
  • Worn – out tires are more prone to punctures and leaks, so they should be replaced.
  • Pinching the tubing when changing the tube can lead to flat tires.
  • Low tire pressure or hitting objects on the road can cause punctures and flats.
  • Insufficient rim tape coverage exposes spoke holes and increases the risk of flats.

Keep reading as we roll out the best ways to keep your cycling adventures free from dreaded flats!

Reasons Why Bike Tires Keep Going Flat

There are several reasons why bike tires keep going flat, including sharp objects stuck in the tire, worn-out tires, pinching of tubing during change, low tire pressure or impact with objects, and insufficient rim tape coverage.

A Sharp Object is Stuck in the Tire

A sharp thing stuck in your tire can make it go flat. Glass, nails, or other sharp things on the road can poke a hole in your tire. This hole lets air leak out and causes the tire to deflate.

It is one of the common reasons why bike tires keep going flat. If you see a nail or any sharp piece poking into your bike’s back tire, take it out right away! Make sure you patch up the spot where it was stuck to prevent more air loss.

Get a specialist if needed because they have the tools and know-how to fix this problem fast and without causing more harm to your wheel.

Worn-Out Tire

worn-out tire is another reason why your bike tire keeps going flat. Over time, the tread on your tire can wear down, making it more susceptible to punctures and leaks. Additionally, as the tire ages, it becomes less flexible and can develop cracks or weakened areas that lead to air loss.

It’s important to regularly inspect your tires for signs of wear and tear, such as bald spots or uneven tread. If you notice any damage or if your tires are old and worn out, it’s best to replace them with new ones to prevent future flats.

Remember that proper maintenance and timely replacement of worn-out tires can help keep your bike running smoothly without frequent flat tire troubles.

Pinching of Tubing During Change

When changing the bike tube, one common mistake is pinching it. Pinching can occur when you’re putting the new tube inside the tire and accidentally squeeze it between the tire bead and rim.

This can create small holes or weak spots in the tube that lead to flat tires. To avoid this, take your time when replacing the tube, making sure it sits smoothly inside without any folds or twists.

Gently push the tire back onto the rim, being careful not to pinch the tube in the process. Properly installing a new tube without pinching it will help prevent future flat tires caused by this error.

Low Tire Pressure or Impact with Objects

Low tire pressure or impact with objects can also cause your bike tire to go flat. When the tire pressure is too low, it becomes more susceptible to damage. Riding over sharp objects like glass, nails, or rocks can puncture the tire and cause it to deflate.

Additionally, hitting curbs or other obstacles hard can result in a pinch flat, where the inner tube gets pinched between the rim and an object, causing a puncture. It’s important to regularly check your tire pressure and avoid riding over debris or hitting obstacles forcefully to prevent these issues from occurring.

Insufficient Rim Tape Coverage

Insufficient rim tape coverage can cause your bike tire to keep going flat. Rim tape is a layer of protective material that covers the spoke holes in your wheel, preventing the inner tube from getting punctured by the spokes.

If the rim tape is not wide enough or has worn out over time, it may expose the spoke holes and lead to repeated flats. Make sure to check and replace the rim tape if needed to ensure proper coverage and avoid flat tires caused by this issue.

Steps to Fix a Flat Bike Tire

To fix a flat bike tire, first, identify the cause of the flat tire by examining the tire for any sharp objects or signs of wear. Then, remove the sharp object if found or replace the worn-out tire with a new one.

Reasons Why Bike Tires Keep Going Flat

Next, carefully change the tube without pinching it, ensuring that it is properly aligned and seated in the rim. Afterward, inflate the tire to the recommended pressure using a bike pump.

Finally, ensure sufficient rim tape coverage to prevent future flats.

Identify the Cause of the Flat Tire

To fix a flat bike tire, it’s important to first identify the cause of the problem. There could be several reasons why your back bike tire keeps going flat. It could be due to a sharp object that is stuck in the tire, like a nail or glass shard.

Another possibility is that the tire itself is worn out and needs replacement. Pinching of the tubing during a previous tube change can also lead to flats. Low tire pressure or impact with objects on the road can cause punctures as well.

Lastly, insufficient rim tape coverage can result in repeated flats. By understanding what’s causing your flat tire, you’ll be able to take the necessary steps to fix it and prevent future flats from happening again.

Remove Sharp Object or Replace Worn-Out Tire

If you have a flat bike tire, it could be because there’s a sharp object stuck in it or the tire is worn out. Look for any nails, glass shards, or thorns and remove them carefully.

If your tire is old or damaged with visible cuts and tears, it’s time to replace it with a new one. Don’t try to patch up a severely worn-out tire as it won’t hold air properly. Remember to check the inside of the tire too, as sometimes sharp objects can get stuck there as well.

Properly Change the Tube without Pinching

To properly change the tube without pinching, follow these steps. First, deflate the tire completely and remove it from the bike wheel. Next, carefully remove one side of the tire bead from the rim using tire levers or your hands.

Take out the punctured tube and inspect it for any sharp objects stuck in it. Once removed, inflate the new tube slightly to give it shape before inserting it into the tire. Starting at one side of the tire bead, slide the tube inside while making sure not to pinch or twist it.

Then, push both sides of the tire bead back onto the rim by hand, ensuring that no part of the tube is caught between them. Lastly, use your hands or a lever to fully secure both sides of the tire bead onto their respective edges of the rim until everything is in place securely without pinching or damaging the tube.

Inflate the Tire to Recommended Pressure

To fix a flat bike tire, you need to inflate it to the recommended pressure. This is important because insufficient air pressure can cause pinch flatting, where the tire gets pinched between the rim and an object, causing it to go flat.

By inflating the tire properly, you ensure that it has enough air to support your weight and roll smoothly on different surfaces. It’s a good idea to check the recommended pressure for your specific bike tire and use a reliable pump or gauge to fill it up correctly.

By doing so, you can prevent flats and enjoy a smoother ride.

Ensure Sufficient Rim Tape Coverage

To prevent flat bike tires, it’s important to ensure sufficient rim tape coverage. Rim tape is a protective layer that covers the spoke holes on the inside of your wheel rim. It helps to prevent the inner tube from getting punctured by the sharp edges of the spoke holes.

If there is insufficient rim tape coverage or if it becomes damaged or worn out, it can lead to flats. Make sure that you have good quality and properly installed rim tape that fully covers all the spoke holes in your wheel rims to reduce the risk of flat tires caused by punctures from within the wheel.

Tips to Prevent Flat Bike Tires in the Future

Tips to Prevent Flat Bike Tires in the Future

To prevent flat bike tires in the future, follow these tips: Avoid road hazards, maintain proper tire pressure, regularly inspect and replace worn-out tires, install quality rim tape, and carry a patch kit or spare tube for quick fixes.

Avoid Road Hazards

To prevent flat bike tires in the future, it’s important to avoid road hazards. Watch out for sharp objects like nails and glass on the road that can puncture your tire. Be careful when riding over speed bumps or rough surfaces as they can damage your tires.

Try to steer clear of debris or other obstacles that may cause a flat tire. By staying alert and avoiding these hazards, you can reduce the risk of getting a flat tire while biking.

Maintain Proper Tire Pressure

Maintaining proper tire pressure is essential for preventing flat bike tires. When the tire pressure is too low, it increases the risk of pinch flats, where the tube gets squeezed between the rim and an object, causing a puncture.

Additionally, low tire pressure makes it easier for sharp objects to penetrate the tire and cause leaks. On the other hand, overinflated tires are more susceptible to blowouts and can result in a bumpy ride.

To avoid these issues, regularly check your bike’s recommended tire pressure using a gauge and inflate them accordingly using a bike pump. By keeping your tires properly inflated, you can reduce the chances of experiencing flat tires while riding.

Regularly Inspect and Replace Worn-Out Tires

Regularly inspecting and replacing worn-out tires is essential to prevent flat bike tires. Over time, the tire tread can wear down, making it more prone to punctures and flats. By checking your tires regularly for signs of wear such as thinning tread or cracks, you can catch any issues early and replace the tire before it causes a flat.

Remember that worn-out tires are more likely to fail on rough terrain or when hitting road debris, so it’s important to keep an eye on their condition. Taking this proactive approach will help you avoid unexpected flat tires and ensure a smoother ride.

Install Quality Rim Tape

Installing quality rim tape is essential in preventing flat bike tires. Rim tape acts as a protective barrier between the inner tube and the spoke holes on the wheel rim. By applying a high-quality and properly fitting rim tape, you can prevent sharp edges of the spoke holes from puncturing the inner tube.

This helps to ensure that your tire remains inflated and avoids unnecessary flats. Look for rim tapes made from durable materials like nylon or cloth, which provide excellent protection against punctures.

Make sure to carefully measure your wheel diameter to choose the right size of rim tape for a snug fit. Installing quality rim tape is an easy step that goes a long way in keeping your bike tire from going flat repeatedly.

Carry a Patch Kit or Spare Tube for Quick Fixes

To be prepared for unexpected flat tires, it’s a good idea to carry a patch kit or spare tube with you. These kits usually include patches that can be applied to small punctures and an adhesive to make them stick.

If the damage is too severe for a patch, having a spare tube allows you to quickly replace the flat one and continue riding. Being able to fix your tire on the go means less time wasted and more time enjoying your ride.

So, make sure you have a patch kit or spare tube handy whenever you hit the road on your bike.

Recommended Products to Reduce Flat Tire Risk

Reduce the risk of flat bike tires with these recommended products:

Orange Seal Road Tube Kit

Orange Seal - MTB Tubeless Kit | 24 mm width tape

The Orange Seal Road Tube Kit is a highly recommended product that can help reduce the risk of flat tires. It includes everything you need to fix a flat quickly and easily. The kit contains self-sealing tubes that instantly seal punctures up to 1/8 inch in size, preventing air from escaping and keeping your tire inflated.

This means you can continue riding without having to stop and change out the tube. The Orange Seal Road Tube Kit also comes with valve cores, rim tape, and instructions for easy installation.

With this kit, you’ll have everything you need to take care of any flat tire situation on the road quickly and get back to enjoying your ride.

Continental Grand Prix 5000 Tires

Continental Grand Prix 5000 Tires

The Continental Grand Prix 5000 Tires are a recommended product to reduce the risk of flat tires. These tires are known for their durability and puncture resistance, making them less likely to go flat.

They have a strong tire thread that can withstand sharp objects on the road, reducing the chances of getting punctures. The high-quality construction also helps prevent blowouts and over-inflation, which can cause flats.

With the Continental Grand Prix 5000 Tires, you can enjoy a smoother ride with fewer worries about your back bike tire going flat.

CrankBrothers Speedier Tire Levers

CrankBrothers Speedier Tire Levers are a useful and efficient tool for fixing flat bike tires. These tire levers are designed to easily remove the tire from the rim, making it easier to fix or replace an inner tube.

With their durable construction and ergonomic design, they provide leverage and control while minimizing the risk of damaging the tire or rim. The CrankBrothers Speedier Tire Levers are a great addition to any cyclist’s toolkit, making tire changes quicker and more straightforward.

So if you’re tired of struggling with stubborn tires, these tire levers can make your life much easier.

Muc-Off Ultimate Tubeless Setup Kit

Muc Off Puncture Plug Repair Kit

The Muc-Off Ultimate Tubeless Setup Kit is a great product to help prevent flat tires on your bike. This kit includes everything you need to set up your tires for tubeless riding. It comes with sealant, rim tape, and valves that are all designed to create an airtight seal and eliminate the need for inner tubes.

One of the key benefits of this kit is the high-quality sealant it provides. The sealant helps to fill any small punctures or cuts in your tire, preventing them from causing flats while you’re out riding.

Additionally, the rim tape included in the kit ensures that there are no gaps or leaks where air could escape.

By using the Muc-Off Ultimate Tubeless Setup Kit, you can reduce your risk of getting a flat tire on your bike. Its easy-to-use components make it simple to convert your tires to tubeless and enjoy a smoother ride without worrying about flats caused by sharp objects or low pressure.

Velox Rim Tape

Velox Rim Tape is an important component that helps prevent flat tires. It acts as a protective barrier between the inner tube and the spoke holes on your bike’s rim. By providing a smooth surface, Velox Rim Tape reduces the chances of the tube getting punctured or damaged by sharp edges or irregularities on the rim.

This durable tape is easy to install and comes in various widths to fit different rim sizes. With Velox Rim Tape properly applied, you can have peace of mind knowing that your bike tire is less likely to go flat due to issues with the rim.


If you’re wondering why your back bike tire keeps going flat, there are a few possible reasons. It could be due to a sharp object stuck in the tire, a worn-out tirepinching of the tubing during changelow tire pressure or hitting objects, or insufficient rim tape coverage.

To fix a flat bike tire, you need to identify the cause and remove any sharp objects or replace the worn-out tire. Properly changing the tube without pinching is important as well as inflating the tire to the recommended pressure and ensuring sufficient rim tape coverage.

To prevent future flats, avoid road hazards, maintain proper tire pressure, regularly inspect and replace worn-out tires, install quality rim tape, and carry a patch kit or spare tube for quick fixes.

Some recommended products that can reduce flat tire risk include Orange Seal Road Tube Kit, Continental Grand Prix 5000 Tires CrankBrothers Speedier Tire Levers Muc-Off Ultimate Tubeless Setup Kit Velox Rim Tape.

That’s it!


1. Why does my back bike tire keep going flat?

Your back bike tire may go flat because of reasons such as a punctured bike tire, overinflation, torn wheel, or damage to the tire tread.

2. What can cause a bicycle tire to go flat?

A bicycle tire can become flat if it steps on sharp objects that puncture it. Other reasons can be street debris causing damage or worn-out tires.

3. How can I repair a punctured bike tire?

You can fix your punctured bike by applying a patch in the hole or replacing the inner tube with proper bike maintenance tools and materials for fixing flats.

4. Does low pressure cause pinch flats on my back tire?

Yes! When you ride your bicycle with low-pressure tires, it could lead to what’s known as “pinch flats.”

5. Why does my new rear tire keep getting deflated?

Even new tires might get deflated due to various causes like wheel damage from street debris, improper inflation/excessive air that leads to burst outs; faults during installation process resulting in leakage and hence needs immediate attention for repairing or replacement.

As a software developer, I'm dedicated to crafting sophisticated digital solutions. Parallel to my profession, I'm a biking enthusiast, passionately advocating for the adoption of cycling, particularly within urban environments. My objective is twofold: promote environmental sustainability and encourage physical well-being. Hence, I invite you to join me in this endeavor of integrating intelligent programming with greener commuting.