Tires are not made with cuts just for the sake of it. There is a significant reason behind it, and it is related to mileage. Many times, you may have wondered why tires on cars or bikes have cuts on them. People often overlook this, considering it a manufacturing defect. Surprisingly, this is not a manufacturing flaw. These cuts are intentionally made as part of the design. The cuts in the rubber on tires are called vent spews. They are specially designed to improve the tire’s performance. In simpler terms, during the movement of the vehicle, pressure is built upon the tires. To reduce this pressure, the cuts are made during the manufacturing process.

1. Understanding Vent Spews: Not Manufacturing Defects, but Intentional Additions

The cuts you see on a tire are not mistakes made during manufacturing. These are intentionally made and serve a specific purpose. Contrary to some misconceptions, these are not indicators of poor quality. In fact, they can actually be a sign of a well-made tire.

2. Purpose of Vent Spews: Air Release during Manufacturing

During the tire manufacturing process, uncured rubber is placed in a mold. As the tire is cured, or vulcanized, air can become trapped between the rubber and the mold. These trapped air pockets can lead to imperfections in the final product. Vent spews are designed to release this trapped air, ensuring that the tire cures evenly and maintains its intended shape.

3. Impact on Tire Strength: Trapped Air is a No-No

If air remains trapped inside the tire during the curing process, it can compromise the tire’s structural integrity. The trapped air can create weak points, which can affect the overall strength and lifespan of the tire. Vent spews help in preventing this, ensuring the tire you purchase is robust and durable.

4. A Sign of Quality: Tires with Cuts Are Beneficial

When you see these cuts, it indicates that the manufacturer has taken measures to ensure that the tire was made without trapped air. So, instead of viewing them as flaws, consider them as signs that the tire has gone through a rigorous quality control process.

5. Mileage Concerns: Vent Spews Don’t Affect Mileage

There’s a myth that these cuts or treads on the tire can affect a vehicle’s mileage. In reality, vent spews have no bearing on how many miles your car can run per gallon. The primary factors that influence mileage are tire pressure, alignment, tread design, and driving habits.

6. Busting Myths and Seeking Expertise: Consult Before You Act

With so much misinformation floating around, it’s essential to rely on expert advice when purchasing new tires or thinking of replacing existing ones. Just because a tire has visible cuts doesn’t mean it’s defective or will give you poor mileage.

Tire treads, specifically vent spews, are intentionally designed aspects of a tire that play a pivotal role in the manufacturing process. They ensure the tire’s quality and durability. Vehicle owners should be informed about their purpose and should not be swayed by myths or misconceptions. Always consult with tire experts and professionals when in doubt about your tire’s health or performance.


– The cuts on tires are not manufacturing defects, but are intentionally made for a specific purpose related to mileage.
– The cuts are called “vent spews” and they are made to release air during the tire manufacturing process.
– If the air is trapped inside the tire, it can affect the strength of the tire.
– Tires with cuts indicate good quality and are beneficial.
– The cuts on tires do not affect the mileage of the vehicle.
– It is important to avoid such rumors and consult experts before purchasing new tires or replacing existing ones.
– The information provided is sourced from various reports and does not guarantee the accuracy of rural media.

Sonu Roy is originally a resident of Samastipur district of Bihar, has been working as a writer in digital journalism for the last 4 years. In his career of 4 years, he has good experience from politics, automobile, motivation, sports to technology field.