Lots of tips and views on dealing with punctures out on the road, so having had a good many punctures over the years, here's my penny's worth:
- Avoiding punctures in the first place is obviously the first approach and this means a careful choice of tyres, the air pressure within, and where you cycle. And don't forget to make periodic/visual checks of the tyres to spot for embedded debris that is just waiting to fully penetrate the tyre and give you grief.
- TYRES - Schalbe Marathon Plus have their fans (and detractors) and in the short period of time that I used them, they were very puncture resistant.
I got rid of my M+ tyres because I didn't like the ride feel and when i did get a puncture I found the tyres hell to get on and off (yes, I know all about the tools and techniques) so I settled for less puncture resistant tyres that were easy to get on/offetc
- TYRE PRESSURE - narrow tyres require higher pressure to avoid pinch punctures for when mounting kerbs and the like, but give less road comfort than wider tyres at lower pressure. Working out the optimim tyre pressure for your tyres and riding style is learnt over time.
- WHERE YOU CYCLE - Some riders have no or little choice about this of course but I'm retired so I choose not to go down litter strewn routes or country lanes after the farmer has just cut his hawthorn hedges!
- However, it is almost inevitable that you will as some point get a puncture and the best 'defence' to avoid calling for help is to learn how to fix it.
- ROAD SIDE REPAIR
- the very first thing to do is try and identify what caused the puncture because the last thing you want is to repair/replace the tube only to find that that tiny piece of glass or thorn is still in the tyre just poised to let your air out again!
- some earlier posters have mentioned patching the tyre there and then - that is easier said than done if the hole is small and not easily spotted.
- Fair enough if you're on a quiet road, pumping air into the tube and listening for the leak may reveal the hole, but if you're hard of hearing or there is a background noise, good luck with that.
- MY APPROACH
- what works for me but won't suit everyone of course and opinions will vary but on getting a puncture I remove the wheel, tyre and tube.
- I do this by turning the bike upside down - before doing that and for rear wheel punctures, I put the derailleur rear gear onto the smallest sprocket, loosen the V-brake, put a cover over my saddle, remove the tools from the saddle bag, clear the handlebars of 'stuff' if needed (I have bar end grips which can be angled to allow bike inversion wihout clearing most items off my handlebars).
- some folks are ok taking a rear wheel of without inverting the bike but with derailleur gears getting the wheel back into place takes practice, even more so if there's a disc brake to align too.
- Then I visually look for the cause of the puncture and at the same time run my fingers carefully around the tyre's inner surface to identify any debris/glass/thorns etc that need removing.
- The worst piece of debris I ever had was the smallest piece of fine wire that I wasn't able to see but could just feel with the tip of my fingers. There was such a small amount protruding through the tyre that even with my teeth I was unable to grip it which is why I have a small pair of manicure tweezers in the reapir kit.
- having cleared the tyre of debris I then put in a fresh tube (new or previously repaired) and re-assemble everything and take the punctured tube home (or the next cafe) for repair.
- if all is good then I won't need the second spare tube that I also carry.
- DIFFICULT TO REMOVE WHEELS/TYRES? - If you are having difficulty removing the wheel for some reason, then post about it on here to for hints and tips.
- difficult to remove tyres - there are special tools and levers to help but if finger dexterity is an issue, then that's a difficult one to deal with. Some tyre/wheel rim combinations are more forgiving than other. I have Marathon Supreme on our tandem and you can almost get them on/off without levers. Conversely on another bike the tyres on those rims are a nightmare and I carry a tool similar to the pic below.
Of course there are riders who rarely get punctures (lucky devils) but a word of advice for them - if you haven't used your bike pump for a while, periodically check that the pump seals haven't dried out and that the pump works ok. Similalry if you do carry a puncture kit, make sure the glue hasn't hardened and the patches perished (grandmother, egg sucking and all that, but better safe than sorry).