What Can Cause a Bulge on the Outside of Your Tyre, and What Should You Do About It?

Do you actually inspect and maintain your tyres? Find out how you can keep your tyres on your car for longer.

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Spare Tyres: How to Protect and Maintain Your Wheels

Hi, my name is Martin, and I drive a micro car. Driving a micro car means that I don’t have room for a spare tyre — if I carried a spare tyre I there wouldn’t be room for much else. It is a real pain if I get a flat tyre as I have to call a recovery service. Since I can’t carry a spare tyre, I have learnt lots of cool tips and tricks to help to maintain and protect the tyres on my car. I decided to start this blog so I can pass my knowledge on to others.


What Can Cause a Bulge on the Outside of Your Tyre, and What Should You Do About It?

17 July 2023
, Blog

If you've ever noticed a strange bulge on the outside of your tyre, you should certainly pay attention. While it can be caused by various factors, it is crucial that you address the issue before it leads to some serious consequences. What can cause this, and what should you do?

The Risks of Over-Inflation

Over-inflation could cause your tyre to bulge at any point around its exterior. If you've added more air to the tyre than recommended, it can actually distort and lose its shape. This is very dangerous as it could lead to premature wearing and even a blowout while driving. So, make sure that your tyre pressures are always within the recommended limit.

Unexpected Damage to the Sidewall

When a sidewall becomes damaged, it can often lead to a bulge. This type of damage can happen due to various reasons, such as running over a pothole on the open road or scraping against the side of a curb. This type of impact can often cause the tyre's inside layers to separate, leading to that bulge. So, be cautious while driving and watch out for any obstacles or difficult road conditions.

Exposure to Hot Road Surfaces

Did you know that excessive heat can actually break down the tyre from the inside, causing it to lose its structural integrity? Where possible, limit the amount of time that you spend driving on very hot tarmac in the middle of the summer season.

Damaged Interior Belt

The belt is actually a layer of cords or fabric that is found just underneath the tread. It provides much-needed stability to the tyre, especially at speed. However, should the belt break down for any reason, this can cause a bulge. Once again, this represents a dangerous situation, and you should take action as soon as possible.

The Age of the Tyre

The older the tyre is, the more vulnerable it may become. It could become brittle, and this could lead to the development of cracks or bushes on the surface.

What You Should Do Next

Never take a bulge on the outside of your tyre likely, but talk to an expert right away. The damage could be down to a number of reasons, but you'll want to seek professional advice as soon as possible. Unfortunately, it may not be possible to repair a tyre that has a bulge. However, it is better to replace the tyre rather than risk an accident on the open road.

Contact a local tyre shop to learn more.