In Praise Of Tubeless Tires

I have been mountain biking around Oaxaca for eleven years and have never had a flat tire, despite the abundance of thorns in the area, thanks to running my tires tubeless with Stan’s sealant. Today, though, I came close to getting a flat. Six friends joined me for this 51.5 kilometer (32 mile) Sunday ride on what I call the West Etla Valley Loop – see map below. Somewhere in the hills west of Monte Alban my front tire picked up two thorns. One, a bit more than one centimeter (1/2 inch) long, embedded itself in the sidewall just above the side knobbies where it still resides. The other penetrated the center of the tire tread. Neither were a problem while they remained in place. But the second thorn pulled loose while riding at speed on a paved road. Suddenly I could hear air streaming out of the tire and a geyser of Stan’s sealant spouted from the hole left by the thorn. In theory the sealant should have plugged the hole. But to be on the safe side, a riding buddy broke a small thorn from an acacia tree and inserted it. That did the trick! I aired up the tire and rode home without further incident. Some years back I amazed my biking buddies by using a needle-nosed pliers to pull 72 thorns out of the carcass of an old tire I was replacing with a new one. Most were very tiny, but at least two were about a centimeter long. Any of them might well have caused a flat tire if I were using inner tubes. But thanks to running tubeless I had worn out the tire without it ever going flat. So, yes, count me among those who are believers in going tubeless.