Fix A Flat Fast – How To Change An Inner Tube In Record Time, by Global Cycling Network on YouTube. 5 min 3 s.
- Video length
- 5 min 3 s
- Time to do it
- 10 minutes
- Difficulty
- Easy
- Steps
- 10
What you need
Steps
Shift the chain onto the smallest rear cog and open the brake quick release if your bike has one. This makes the wheel easier to remove.
Release the wheel quick release lever or unbolt the axle nuts, then lift the wheel out of the frame or fork.
Let out any remaining air, then push the tyre bead away from the rim all the way around.
Hook a tyre lever under the bead and clip it to a spoke. Use a second lever to work the bead off the rim.
Pull the old tube out, then run your fingers around the inside of the tyre to find the sharp object that caused the flat and remove it.
Push one bead of the new tube into the tyre, starting at the valve. Inflate it slightly so it holds shape.
Fit the valve through the rim hole and work the tube inside the tyre all the way around.
Push the second bead onto the rim by hand. Use levers only for the last few centimetres to avoid pinching the tube.
Check the tube is not trapped under the bead, then pump to your normal riding pressure.
Refit the wheel, close the quick release or tighten the axle nuts, and reconnect the brake. Spin the wheel to check it runs true.
Tips and common mistakes
Carry a spare tube, two tyre levers and a pump on every ride so a flat never ends your day.
Find and remove the thorn or glass before fitting the new tube, or you will flat again straight away.
Add a little air to the new tube before fitting it to avoid pinching it under the tyre bead.
Questions
Do I need to take the wheel off to fix a flat?
It is much easier and faster to remove the wheel first. On most bikes a quick release lever or axle nuts make this a one minute job.
How do I know which inner tube size to buy?
Match the tube to your tyre size, printed on the sidewall, and to your valve type, Presta or Schrader. The tube box lists the range it fits.
Can I patch the tube instead of replacing it?
Yes, a patch kit works for small holes and saves money. At the roadside a fresh tube is quicker, so patch the old one at home.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
