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Old 12-19-20, 11:38 AM
Join Date: Jan 2008
Location: Austin, TX
Posts: 1,397

Bikes: Surly Karate Monkey, Twin Six Standard Rando

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With a tubeless tire, sealant is the first line of defense for small punctures. If the puncture is too big for the sealant, you can probably plug it with a simple, small, cheap plug kit. Beyond that, any slice big enough will require that you glue a patch inside the tire. This size hole would be big enough for a blowout with a tube anyway. At that point, If you have too far a distance to walk, you'd best just boot the tire inside and out a tube in it. This is exceedingly rare. When I pull a tire off the rim, there are dozens of little boogers from where the sealant plugged small holes.

I've been riding tubeless for about a decade and the frequency of flats that cause me to stop are about 2–3 times a year. That's on Texas terrain where cactus, mesquite, and sharp limestone ledges cause the stragglers using tubes to stop 2-3 times per ride. I top off my sealant every few months and carry a pump, CO², tube, and plugs. I've gone through a few tubes in the past few years and only one was for my own bike. The rest were for bailing out unprepared riders whose tubes had failed them.
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