You’re looking at the first foreign object to penetrate my Marathon Supremes’ impenetrable Vectran layers in nearly two years of riding. I pull these out of Supremes all the time with no ill effects, but this bad boy made it all the way through to the core. It’s such a grand specimen I may have to give it a coat of shellac and mount it in a shadow box.
The wimpy racing tires on our little fixie were attacked by a handful of these same (but smaller) thorns and every single one penetrated the tubes. It goes without saying that the tubes were toast. It’s official: I hate wimpy racing tires (you would too if you were the designated flat fixer in a family of five).