I know this may havea simple answerbut idk what it is. So I’m pretty sure there aren’t little nail trolls laying nails vertically all over the street so where are the nails coming from and how do they keep getting in my tires?
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That usually happens on the rear tires. A horizontal nail on the ground on is hit by the front tire can change direction or become airborne. When the rear tire hit the nail it can be perfectly oriented to puncture that tire.
I was leaving work ( I was a plumber). We where remodeling a store in a strip center. As I was getting in my car I saw a carpenter who was parked in front of me pull some left over screws from his pocket and drop them on the pavement. Does this answer your question.
Some nails, like roofing nails, have wide flat heads and certainly *can* land point-up. Roofing nails are also used in large quantities.
Nails and other debris can also be knocked around the road by cars, and be knocked against an oncoming tire.
Not sure if this is the expected answer… but you have to run over some hands or feet for it to happen.
Nail doesn’t need to be pointing up. Imagine the typical joke of stepping on a rake. Let’s say as tire approaches the first thing the rubber touches is the head of the nail. As it presses down, the other end with the point will lever up. Tire rolls over the point and that’s it.
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