Tips Sahabat

Causes of Bulging Car Tire Sidewalls

10 April 2025
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The bulge in the tire wall can occur at any time. It not only disrupts comfort while driving but is also unsafe.  

The construction of tires is actually designed for all terrains and obstacles. However, they can still suffer damage that can have fatal consequences. Especially for car tires  that are already worn or starting to bald and often pass through damaged roads.

Causes of Tire Wall Bulge

A bulge in the tire is the second problem after a flat. This occurs because the threads on the side are broken, resulting in stronger pressure.  A flat occurs due to a hole in the tire body.

Unlike a flat that can happen at any time during the journey, a bulge can actually be anticipated. Thus, the tire's lifespan, comfort, and safety while driving can still be felt. What are the causes?

Deformation or Shape Change in Tires

Frequently passing through potholes or damaged roads can cause one part of the tire to become thinner. The pressure on the other side causes that part to easily bulge.

Similarly, the longer the tire is used, the more it becomes bald. The bald side is prone to bulging because it is thinner compared to other parts, especially on the edge.

Excessive Tire Pressure

A bulge is more caused by uneven pressure on the tire surface or actually the same pressure but affecting parts with different thicknesses. The thinner the part compared to others, the greater the likelihood of bulging.

The strength of the air pressure in the tire will flow to the softer parts, which are the thinner areas, causing the surface to bulge out. Therefore, when inflating, make sure to use standard pressure.

Tire Pressure Below Specifications

If the above discussed the cause of bulging tires due to excessive air pressure, it turns out that being below specifications can have the same effect. Tires that are under-inflated can bulge if suddenly subjected to strong pressure.

For example, when driving on a damaged road and the air inside the tire flows strongly to one part. To address this, check regularly. You can also use air filling services at gas stations to know its condition.

Too Often Exposed to Sharp Objects

Damaged roads, potholes, and many new gravel fragments are causes of tire damage that can have fatal consequences. Not only does it reduce comfort while passing, but the tire can also bulge.

This is certainly something that cannot be controlled. One way to anticipate that the tire does not easily bulge is by maintaining the pressure inside it. This step is the easiest to do compared to other methods.

Dead Suspension

When driving, all terrains may need to be traversed. Drivers are not free to choose roads that are always smooth. Suspension or vibration damping systems are very necessary for comfort.

Not only that, but unsuitable suspension conditions cause some spare parts to wear out quickly. One of them is the tire. Unsuitable suspension makes tires bald quickly and accelerates the occurrence of bulges.

Minimizing the Occurrence of Tire Wall Bulge

After knowing the causes of tire bulges, it's time to start addressing them. One way is to use quality tires. In addition, thorough vehicle checks and maintenance are also necessary.

Perform maintenance regularly. Trust this to a professional workshop. For vehicle owners of Daihatsu, during routine checks, all parts of the vehicle will be inspected by skilled technicians.

Daihatsu also uses quality tires to reduce tire wall bulges. Consumers also receive detailed information about maintenance, including the ideal air pressure for the vehicle. Make sure to use a Daihatsu vehicle.

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