Cruising down the A34 last weekend, I began to feel a strange sensation in my rear tyre. A soft, squidgy, dragging sensation, obstructing all of my efforts to pedal. Feeling as deflated as my tyre itself, I realised the inventible had finally happened – I’d got my first flippin’ puncture and had no clue how to fix it!
Before I got my road bike, I’d been told to carry an inner tube with me on my rides. So, I happily complied, willingly bringing it along with me on my every ride like a little pocket mascot. But when I pulled over and examined the little thing, I sadly realised it had no way of saving me. With absolutely no idea how to change an inner tube, I wheeled my bike to Halfords and in true Barbie style asked: “How do I fix a puncture?”
I would hope that most of my fellow entry-level cyclists would have learnt how to change an inner tube, pre tearing up the roads, but if you’ve acted like the cycling Barbie that I well and truly did and pushed your luck for far too long, it’s time to get learning. You’re not always going to be riding with a pro or be 3k away from your nearest Halfords (what a godsend that was), so it’s best to be prepared with the tools and the ‘tekkers’. Follow my 10 Step (Dummies) Guide below and get yourself puncture ready!
A 10 Step Guide to Changing an Inner Tube and Fixing a Puncture
1. Remove the punctured wheel. Now this might sound a simple operation but removing a road bike wheel (particularly the rear wheel) requires some serious know-how and technique! For front tyres, you firstly need to release the break (at the top of the fork) by opening up the little lever. This will allow the wheel to pop out between the brake pads with ease. Then, open up the quick release lever at the bottom of the fork. When tight, this holds the wheel firmly in place in the dropouts. A bolt will meet the release on the other side – hold this bolt, whilst twisting the quick release lever until it loosens. When you feel the wheel loosen, move your hand to the top of the wheel and with the palm of your hand give it a little push and it will drop out.

For back tyres, turn the bike upside down and release the break with the little lever. It is important to move the chain as far to the outside as possible. By moving this to the outside it will also move the rear derailleur as far to the outside as it can go so that it is least in the way for removing the wheel. To do this, shift the gears into the highest gear (smallest ring) with the shifters, whilst turning the pedals with your other hand so the chain shifts. Release the quick release lever, before pulling the derailleur back on the other side. Give the wheel a little tug and it should pop out of the dropouts.

2. Let the air out of the inner tube. This can be achieved by unscrewing the dust cap off the valve, unscrewing the valve tip itself, and then pushing it down with your thumb.
3. Release the inner tube from the tyre. Insert one tyre lever under the edge of the tyre and lever off the rim before clipping the other side of the lever onto the spoke. Insert a second tyre lever (a good distance apart from the first) following the same procedure. Take a third tyre lever and run it around the rim to release from the tyre. Then, unscrew the lock ring which keeps the valve held in place and push the valve of the inner tube through the valve hole to remove the inner tube. Leave the tyre sat loosely around the rim.

4. Check for puncture causes! Insert your fingers into the tyre and run them around the inner surface to check for any sharp objects which may have caused the puncture. If you find any remove them so that your new inner tube doesn’t get punctured.
5. Slightly inflate the new inner tube. Its best to inflate it a little so that it holds its shape. To do so, remove the dust cap and lock ring and unscrew the valve tip on the new inner tube, before inserting a pump and inflating. You can get some great lightweight mini pumps that will inflate tyres to the recommended pressure (at least 100psi). I chose the Topeak Pocket Rocket Mini Pump from Halfords which I’ve found works a treat ! It comes with a bracket too so you can mount it under your bottle cage and you can’t feel it’s there!

6. Insert the new inner tube. Once it’s inflated a little, insert the inner tube valve into the valve hole and sit it around the rim underneath the tyre by feeding it through with your thumbs. Push the valve up into the tyre to stop it getting sandwiched between the tyre and the rim.

7. Fully inflate the inner tube. Following the same procedure as before, inflate the inner tube until it feels firm – a great pressure test is to check its firmness against your other tyre. Then, screw the valve ring back on and check there is no air escape before popping on the valve cap.
8. Put the wheel back on the bike. Again this requires a how-to guide in itself! For the rear wheel, keep the bike upside down. Lift up the derailleur and drape the chain over the highest gear on the cassette, guiding the axle into the dropouts. Push the wheel into the dropouts and close the quick release lever at the point it feels tight. Ensure you close the break. For the front wheel, turn the bike back over and guide the wheel into the dropouts, through the brake pads. Hold the nut on one side and spin the release lever around on the other side until it feels relatively tight before closing shut. Ensure you close the break.
9. Find that puncture! Once you’re back home (or if you haven’t got a spare tube on your ride) run your fingers over the inner tube to find the hole. A good trick is to drop the inner tube into a bucket of water and you will see that air bubbles will rise at the point the puncture lies.

10. Fix your puncture. Once you’ve found the hole, it’s time to patch it up – for this I chose Halfords Instant Patches. With these patches, you simply sand down the area where the hole lies (for a flush stick), peel off the back of the patch and it stick on the puncture. Obliviously there are more expensive and sturdy options available, but where you are using your pre-punctured inner tube as your spare, these are perfect.
Save yourself the hassle (and the shame) of getting caught short on your rides and get practising. With this how-to guide, you’ll be sure to become a puncture pro!