How to Fix a Flat Tyre: A Step-by-Step Guide

How to Fix a Flat Tyre: A Step-by-Step Guide

Experiencing a flat tyre can be a frustrating interruption to any cycling trip, whether you're commuting to work or enjoying a weekend trail ride. However, with a basic understanding of the repair process, you can handle this common issue swiftly and efficiently. It's a skill that's beneficial to all cyclists, from the daily commuter to the dedicated mountain biker or racer looking to avoid delays during a ride.

The process begins with identifying the cause of the flat, which could range from a simple puncture to a more serious problem like a sliced sidewall or a damaged rim. You'll need to gather a few essential tools and supplies before you start the repair: a replacement inner tube or patch kit, tyre levers, and a pump to inflate the tyre after repair. Having these items on hand will ensure that you're prepared to address a flat tyre whenever it occurs.

Once you've prepared your tools and identified the issue, the actual repair involves removing the wheel, prying off the tyre, locating and fixing the puncture, then putting everything back together. This key maintenance skill not only keeps your cycling trips uninterrupted but also instils confidence and self-reliance. With a bit of practice, repairing a flat tyre can be a quick and straightforward task.

Table of Contents

Preparing for the Repair
Executing the Repair

Preparing for the Repair

Before you begin, it's important to identify the cause of the flat tyre to ensure a proper fix. Gather all necessary tools and materials so you can work efficiently.

Identifying the Problem

Firstly, check your tyre for any objects that might have caused the puncture. Rotate the wheel slowly, inspecting the outer surface of the tyre for nails, glass, or other sharp objects. Once you've located the puncture site, remove any debris if present. It's also crucial to inspect the rim for damage as this could cause recurring issues.

Tools and Materials

You'll need the following tools and materials to repair your flat tyre effectively:

  • Tyre Levers: Essential for removing the tyre from the rim.
  • Pump: To re-inflate the tyre after repair. Ensure it is compatible with your valve type.
  • Patches or Replacement Tube: Depending on the damage, you may need a patch or a new tube.
  • Wrench (if necessary): For wheels that aren't quick-release.
  • Gloves: Optional, but they'll keep your hands clean.

Materials Checklist:





1 pair

To protect your hands

Tyre Levers

2 or 3

To remove the tyre from the rim

Patch Kit or Tube

1 kit or tube

For patching or replacing the tube



To inflate the tyre to the correct air pressure

Wrench (if necessary)


To remove a non-quick-release wheel

Remember to unscrew the valve cap before using the tyre levers, and be careful not to damage the valve stem during the process. After fixing the puncture or replacing the tube, check that the tyre is seated correctly on the rim and that the air pressure matches your tyre's specifications.


    Executing the Repair

    When you encounter a flat tyre, the ability to fix it swiftly and efficiently is paramount. Familiarise yourself with each step of the process to minimise downtime and get back to riding.

    Removing the Wheel

    First, you need to remove the affected wheel from your bike. If you have a quick-release system, open the lever and unscrew the retaining nut slightly to free the wheel. For bolted wheels, use an appropriate spanner to loosen the nuts. Lift the bike, and guide the wheel out of the dropouts.

    Inspecting the Tyre

    After removing the wheel, inspect the tyre for signs of damage such as thorns, stones, or debris that could have caused the puncture. Check the tread and sidewall for cuts or dents. Remove any foreign objects you find to prevent future flats.

    Repairing or Replacing the Tube

    Examine the inner tube for damage. To locate smaller holes, inflate the tube slightly and listen for a hiss or submerge it in water and watch for bubbles. For a punctured tube, apply a patch specifically designed for inner tubes. If the damage is extensive or you hear a loud bang indicating a blowout, replace the tube with a new one, ensuring it matches the circumference and is compatible with your tyre and rim.

    Reassembling the Components

    Once the repair is complete, insert the inner tube into the tyre, tucking the tyre bead evenly around the rim. Use a tyre lever if necessary, but do so gently to avoid pinching the tube. Inflate the tyre to the recommended pressure, ensuring it seats correctly to reduce rolling resistance. Reattach the wheel to the bike, secure the quick-release lever or bolts, and verify that the wheel spins smoothly with no resistance. If your bike uses Schrader valves, check the valve core is tight to maintain a proper seal. Once done, your tyre should be ready for use with optimal performance.

      Back to blog