The southwest bike tire massacre

I recently visited Tucson, Arizona and was happy to see a fair amount of people riding bicycles rather than driving through the city’s downtown area. There are wide bike lanes and plenty of racks for parking, and even a monthly street fair where bikers can pick up new and used parts or equipment. All this plus a mostly sunny forecast made Tucson seem like an ideal biking locale, until a friend who lives in the area pointed to the numerous needles and burrs sticking out of his bike tires.

Originally posted here:
The southwest bike tire massacre