How to puncture proof your tyres (video)

Punctures can feel like a necessary evil for cyclists, but this useful puncture proofing hack can seriously reduce your risk of a flat tyre on the road
Playlist 20 Videos How to puncture proof your tyres (video) 03:30 July's tech of the month: new products from Garmin, 100%, Prime and Cannondale 19:54 Pro bike: Geraint Thomas's Pinarello Dogma F12 04:35 June’s tech of the month: New Brompton X, Cannondale SystemSix and Maxxis tyres 20:54 April's Tech of the Month: Canyon Aeroad with SRAM AXS, new Vittoria tyres and Fulcrum wheels 26:29 March's Tech of the Month: Pinarello, new Specialized shoes, DT Swiss wheels and Evoc's bike bag 27:06 February's Tech of the Month: new kit from Castelli, Le Col, Smith and Triban 24:22 Greg Van Avermaet to ride a gold Giant TCR in 2019 (video) 01:00 Watch: Top five Strava cheats (video) 04:41 January's Tech of the Month: Colnago C64, Assos Equipe RS S9, Santini Vega and Specialized S-Works Recon 18:29 December's Tech of the Month: New Shimano 105, Canyon's best bike and new helmet tech from Specialized and Met 22:31 The best new e-bikes of 2019 05:01 November's Tech of the Month: New S-Phyre shoes, a CatEye lightshow, Fulcrum carbon wheels and a big bike bag 24:26 October's Tech of the Month: New Giro helmet, rain protection from Castelli and Specialized's tubeless tyres 19:24 Watch: Seven of the hottest aero bikes for 2019 06:15 The six most exciting cycling computer releases of 2018 03:09 September's Tech of the Month: Fighter jet cycling glasses, Wahoo's indoor training system and a pair of very sensible lights 17:37 Watch: Seven stunning shoes coming in 2019 04:53 August Tech of the Month: Enve wheels, Oakley sunglasses and something very special from CeramicSpeed (video) 18:14 Watch: What are the key features to look for when buying your next bike? 09:16

Many wheel and tyre companies are pushing tubeless tyres and wheels at the moment. For those who don’t know, tubeless tyres are similar to a clincher, but form an air-tight seal against the rim and contain sealant, instead of an inner tube.

We previously did an experiment to see if a tubeless road tyre could survive a nail being hammered into the carcass. The result was that it can seal and is very impressive. Further to that we’ve tubeless tyres through the winter on the road and remain very impressed.

This got us thinking. What would happen if you put tubeless sealant inside a standard inner tube and then put it in a normal clincher tyre set up on your existing wheels? Would it work and would it still seal punctures?

We used Stan's No Tubes Sealant

We used Stan’s No Tubes Sealant

>>> American Classic Road Tubeless Wheel review

We have decided to do an experiment to find out. To put the sealant inside the inner tubes we removed the valve cores – you can do this with a special key, or gently with some pliers. If you use the latter, be careful not to strip the thread.

This will only work if your tubes have removable valve cores.

This will only work if your tubes have removable valve cores.

Next we injected sealant into the inner tubes, while deflated inside the tyre. This is a little messy and you may need to spin the wheel a couple of times to get the sealant moving around the tube. We used about 25-30 mL per tube.

>>> Click here for our buyer’s guide to road bike wheels

a valve key. pliers can also be used

a valve key. pliers can also be used

Next we replaced the valve core and pumped up the tyre as normal to around 90-100 psi. For reference we used Continental Grand Sport Tyres, Continental Butyl inner tubes and Stan’s No Tubes Sealant.

The Test

Sticking multiple drawing pins into the tyre and tube was attempted. In all cases the punctures were sealed in a matter of seconds, with minimum air loss. It is necessary to spin the wheel to replicate the centrifugal force of riding and push the sealant to the outside of the wheel.

the system easily seals multiple drawing pins

the system easily seals multiple drawing pins

Next we tried the nail. We were surprised to see that this also works. Although it does take slightly longer to seal. So there you have it… It works!

even a nail can seal!

Even a nail hole can seal!

Verdict

Although it will dramatically reduce your puncture risk, it is not quite as a effective as sealing punctures as a dedicated tubeless set up. That said, even a dedicated tubeless set up won’t completely stop punctures and fitting standard clincher tyres is much easier than tubeless ones.

>>> Buyer’s guide to road bike tyres

A bit of air and sealant escaping from the nail hole

A bit of air and sealant escaping from the nail hole

Tubeless tyres can be very difficult to fit, especially with cold hands. This set up is also significantly cheaper. It means you only need to buy some sealant, which is relatively inexpensive. Investing in a full tubeless set up involves wheels, tyres and special pump to blow the tyre onto the rim (much more costly).

Inserting sealant can be a little messy, but is easier than fitting most tubeless tyres

Inserting sealant can be a little messy, but is easier than fitting most tubeless tyres

The only real downside to this is that it adds roughly 25 grams of rotating weight to your tyre. Nutty weight weenies might be put off by this, but if it means you don’t have to get covered in crap, shivering while trying to change a puncture in the freezing rain of a winters ride then it is surely a no brainer.

To quote Neil Buchanan from Art Attack, “try it yourself.”

Upcoming events