The small spikes on tires, often called “vent spews” or “vent nubs,” are a byproduct of the manufacturing process. During tire production, the rubber is injected into a mold, and these tiny holes act as vents to release air and excess rubber. This prevents air bubbles from forming in the tire, ensuring a smooth and even surface. They don’t have a functional purpose for driving and are typically worn down over time as the tire is used.
