
Three-legged caltrops can puncture car tires. A three-legged caltrop is a steel-made, triangular-shaped nail with four sharp points. No matter how it is thrown on the ground, one point will always face upward, supported by the other three points acting as legs. If a tire is punctured by a nail, it is recommended not to remove the nail immediately. Instead, drive to the nearest auto repair shop before removing it. If no air leakage is found after removing the nail, you can continue driving; if there is air leakage, a tire repair is necessary. There are two methods for tire repair: the traditional plug method and the patch method. Generally, the patch method is used. For small nails, the patch method is sufficient, being simple and convenient. If the tire is punctured by a larger nail, a mushroom plug repair must be used.

After driving for so many years, I've seen numerous cases of tires being punctured by nails. The most common culprits are large iron nails from construction sites, especially sharp round-headed ones that can easily pierce rubber tires. I've picked up discarded screws, self-tapping screws, and even small thumbtacks on the road—all of which can cause slow leaks or sudden blowouts. Particularly on bumpy roads or construction zones, nails are easily picked up by tires, with higher speeds increasing the risk of penetration. I've even encountered a customer's car punctured by a pin—small but capable of causing leaks over time. It's advisable to avoid construction debris while driving and regularly inspect tire surfaces. If you find embedded foreign objects, try a temporary repair kit or visit a repair shop promptly for professional handling to prevent unexpected blowouts. In the long run, developing a monthly inspection habit can save a lot of trouble.

From a technical perspective, nails that can puncture car tires are mostly made of hard and sharp materials, such as ordinary iron nails, screws, or wire nails. Tires are constructed with multiple layers of rubber and fabric, and sharp objects can penetrate the surface under high-speed pressure. I have compared different types of nails: larger nails are more likely to puncture the tread, while smaller nails like thumbtacks may only cause slow leaks. The location is crucial—nails piercing the shoulder area are more dangerous than those in the crown, as it is a weaker point. Metal materials like steel or iron nails have strong durability and are less likely to break inside the tire. Avoiding driving over areas with metal debris, such as construction sites or crowded streets, is key. Carrying a tire pressure detector allows for early detection of issues, reducing the chance of accidents. For repairs, it's best to use professional tire patches to ensure driving safety and avoid careless fixes.

Safety comes first! I always remind my friends that even something as small as a pin can cause a tire blowout, especially leading to loss of control on highways. Common objects like nails, screws, and fragments of wire loops can easily puncture tires. The key factor is the material—hard metals have exponentially greater penetration power when tires rotate at high speeds. I recommend taking a moment to scan the ground for debris when parking, avoiding areas where sharp foreign objects accumulate. If you notice abnormal tire pressure loss, it's crucial to inspect or switch to a spare tire immediately—driving with a punctured tire significantly increases danger. Regularly cleaning garage floors can reduce such risks. Safe driving isn't just about speed control; it also involves environmental awareness.


