Broken Belt in Tire

Editor: Ilkka

Last updated: August 22, 2023

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Each vehicle part ensures a smooth, safe, and comfortable ride. While we often pay attention to obvious areas like the engine, brakes, and transmission, there’s an underlying issue that tends to go unnoticed: the tires. More specifically, the intricate internal structure of a tire, known as the ‘belt,’ can sometimes break or separate.

A broken belt on tire might not be as visually apparent as a flat, but it can be just as dangerous. In this article, we’ll explore the causes, symptoms, and dangers of a broken belt in tires to help you stay safe and informed on the road.

What Causes a Broken Belt in a Tire?

Tires, though sturdy, are not immune to the wear and tear of the road. The broken belt on a tire is one issue many drivers might face, often without even realizing it. Several factors can cause this, as discussed below.

Rough Roads and High Speeds

Rough roads and high speeds create the perfect storm for broken tire belts. The constant jostling from uneven pavement makes your tires work harder, stressing the internal structure of each one. The continuous impact against sharp rocks or other obstructions can further weaken it, leading to belt breaks.

High-speed driving amplifies this pressure, putting even more strain on those crucial belts within your tires. Aggressive driving techniques like burnouts or drifting intensify these effects and can lead to a broken tire belt much faster.

Tread Separation

Tread separation is another leading cause of broken belts. It happens when the layers of your tires begin to pull apart, causing an uneven driving surface and potentially exposing inner parts and leading to a separated tire. If the tire tread doesn’t adhere correctly to the steel belt underneath, the tire belt breaks.


Many factors contribute to tread separation, like overinflation, incorrect tire installation, manufacturing defects or aggressive driving habits. Extreme temperatures can also be a culprit, as they may cause the rubber in your tires to expand and contract excessively.

Interestingly, steel belted radial tires most experience this complication because they feature steel cords for reinforcement. When driving, you might notice a squealing sound, indicating tread separation.

Defective Belts

Defective belts can also lead to a broken belt in a tire. This could be due to materials used in the tire manufacturing process or mistakes during the tire’s creation. Aggressive driving and normal wear and tear also contribute to this issue. Defective belts can cause steering wheel shakes even at lower speeds.

Remember, tire belts may rust and break over time when exposed to elements like water and oxygen. You should also be wary of cheap tires or those without a good materials warranty, as they might have a higher propensity for these defects.

Manufacturing Defects

The tire manufacturing process is intricate, involving several layers and materials, including steel cords, that create the tire’s internal structure. Any minor error in this process can result in manufacturing defects, weakening the tire and making it more prone to failure. This isn’t always within the tire maker’s control.

A manufacturing defect might display bad tire belt symptoms such as loud noises or uneven tread. Tire manufacturers often recognize these issues and may issue recalls for defective batches.

Manufacturers must have strict quality control measures to minimize these defects and ensure their tires meet safety standards before reaching consumers.

Cuts in the Tire

Cuts in the tire are a common cause of a broken belt. Incorrect tire repair, improper mounting, or even simple road debris can damage the outer tread and the steel belt underneath. When a tire belt is exposed and interacts with rough roads, it might get damaged or snap. This can lead to tremors in the steering wheel or even a tire blowout.

As part of routine maintenance, you must regularly inspect your tires for any visible signs of damage, such as cuts or tears.

Symptoms of a Broken Belt in a Tire

Identifying the signs of a broken belt in a tire early can save you not only a hefty repair bill but also from potential accidents.

Steering Problems

A clear indication of a broken tire belt can be seen in your vehicle’s steering performance. When a tire belt breaks or is damaged, the uneven wear of the tire can make it harder to steer straight. The steering wheel might feel heavier or shaky.

This can make it difficult to maintain control of your vehicle, especially at higher speeds. If you notice any issues with your steering, such as excessive vibration or instability, get your tire inspected and repaired immediately by a professional.


One of the common signs of a broken belt in a tire is noticeable vibrations while driving. You can feel these vibrations throughout the vehicle, especially on the steering wheel or the floor.

When the tire belt is broken, it can cause an imbalance in the tire’s rotation. This results in a noticeable vibration that may become more pronounced as you accelerate. Additionally, irregular tire wear can be a symptom of a broken belt, contributing to these vibrations.

If you experience vibrations while driving, it may indicate that your tire is close to a blowout and needs immediate attention.


A bad tire belt sound is hard to ignore. As the tire belt deteriorates or separates from its tread, it can produce a squealing or repetitive thumping noise, especially at higher speeds. The noise may be louder at slower speeds and resemble metal scraping against concrete.

This can be due to tread separation, a damaged tire belt, or a broken steel belt within the tire casing. As the tire rotates, the damaged section hits the road repeatedly, causing this noise.

If you notice such sounds and other symptoms, check your tires immediately.

Visibly Changed Tire Shape

A broken belt can cause visible deformities in the tire shape. If you look closely, you might notice a part of the tire bulges out or appears flatter than the rest. The steel cords or belts within have snapped or detached, causing that tire section to lose shape.

Worn out tires or those with bad tire wear often have a higher risk of this happening. If a tire looks misshapen or has numerous tiny bumps on its rubber surface, it’s a clear sign of belt issues and demands urgent attention.

Is It Safe To Drive With a Broken Belt in the Tire?

Driving with a broken belt in the tire can be extremely unsafe, affecting your vehicle’s performance and handling. Immediate inspection and repair are crucial to ensure your safety on the road.

Risks and Potential Hazards

Driving with a broken belt in the tire poses severe risks and potential hazards. These dangers include:

  • Sudden Tire Blowout: The internal structure, particularly the steel belt, provides the tire with its durability and shape. When compromised, the tire can burst without warning, potentially leading to accidents.
  • Decreased Traction: A tire with a broken belt can lead to reduced traction on wet or slick surfaces due to tread separation. This reduced grip can make the car susceptible to skidding or hydroplaning, especially during rainy conditions.
  • Vulnerability to External Threats: A tire’s weakened internal structure due to broken belts makes it more prone to external threats like sharp objects, potholes, or sharp rocks, heightening the risk of punctures.
  • Unpredictable Tire Behavior: As the tire tread separates from the belt, it can lead to erratic tire behavior, especially on rough terrains. The tire’s response might not align with the driver’s actions, thus, putting them at risk of an accident.
  • Compromised Emergency Responses: In situations requiring sudden braking or evasive maneuvers, a damaged tire with a broken belt can respond differently than expected, increasing stopping distances or making swerving less controlled.
  • Potential for Roll-overs: Especially relevant for taller vehicles like SUVs, a tire with a broken belt can contribute to a higher risk of roll-overs during sharp turns due to the uneven distribution of weight and compromised stability.

Impact on Vehicle Performance and Handling

A broken belt in the tire can significantly impact the performance and handling of your vehicle. It can cause the steering wheel to shake, especially at higher speeds. The car might drift or pull to one side, demanding extra effort from the driver to keep it on course.

It can also cause vibrations and thumping noises while driving. The decreased stability and handling make it more difficult to control the vehicle, especially on the highway or rough roads.

Importance of Immediate Inspection and Repair

Inspecting and repairing a tire with a broken belt is of utmost importance for safe driving. Ignoring this issue can lead to hazardous situations, such as an increased risk of blowouts on the road.

The early detection of a broken tire belt can prevent further damage. Otherwise, the extent of the damage can exacerbate, leading to more costly repairs or needing a total tire replacement.

A tire with a broken belt can also affect the vehicle’s overall performance, from fuel efficiency to wear on suspension components. Addressing the issue promptly helps prolong the lifespan of other associated parts in the car.

Lastly, some tire warranties or vehicle insurance policies require regular inspections and maintenance. Failing to address issues like a broken belt promptly might void such warranties or affect insurance claims related to tire damage.

Solutions for a Broken Belt in a Tire

If you notice a broken belt in your tire, there are several solutions you can consider:

  1. Replace the Tire: The safest solution to a tire separation is often to replace the damaged one entirely. A new tire reduces risks related to blowouts or compromised handling.
  2. Patch or Repair the Tire: In some cases, it may be possible to patch or repair the damaged area of the tire. However, this is only recommended for minor issues and should be done by a professional.
  3. Rotate Tires: If the broken belt is only in one tire, consider rotating your tires. Moving the damaged tire to a different position on your vehicle can help distribute the wear and tear more evenly.
  4. Check Alignment and Suspension: A broken belt in a tire can sometimes be caused by alignment or suspension issues. Checking and adjusting these components can help prevent future tire damage.
  5. Avoid Overloading: Tires have specific load ratings. Consistently overloading a vehicle can stress the steel belts and the overall tire structure, hastening wear and increasing the chances of tire separation.


A broken belt in a tire is not something to be taken lightly. It can lead to accidents and blowouts, posing risks to the driver and others on the road. The symptoms of a broken tire belt, like steering shakes, thumping noises, and deformed structure, should be checked immediately to ensure safety while driving.