Debunking the Myth: What Are the Small Spikes on Motorcycle Tires?
If you’ve ever taken a close look at motorcycle tires, you might have noticed small, spike-like protrusions scattered across the surface. A common misconception is that these spikes are designed to prevent slipping, but this couldn’t be further from the truth.
These small spikes, known as “vent spews,” are actually a by-product of the tire manufacturing process. They have no functional role in the tire’s performance on the road. So, what exactly are they, and why are they there?
The answer lies in how tires are made. During the manufacturing process, tire molds are created with numerous small vents. These vents serve a crucial purpose: they allow air bubbles to escape as the tire is being formed. If air bubbles were trapped inside the tire, it could compromise the tire’s integrity and safety.
As the melted rubber is poured into the mold and begins to take shape, both the air and a small amount of rubber are forced out through these vents. The rubber that escapes hardens into those small, familiar spikes you see on new tires—what we call vent spews.
In essence, these spikes are nothing more than a natural by-product of ensuring your tires are free from internal air bubbles, allowing for a smooth, safe ride. While they may look intriguing, they serve no purpose once the tire leaves the factory.
So, the next time you spot these little spikes on a motorcycle tire, you’ll know that they have nothing to do with traction or safety—they’re just a harmless reminder of the tire’s journey through the manufacturing process.
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