Preventing Tyre Dry Rot

Table of Contents: 

What Is Tyre Dry Rot?  

Tyre dry rot occurs when the rubber compounds in tyres break down due to environmental factors such as UV exposure, ozone, and extreme temperatures.

Unlike organic rotting, which involves the decomposition of materials by bacteria and fungi, dry rot in tyres is a chemical degradation process. This process leads to a change in the rubber's molecular structure, which results in the rubber losing its elasticity and flexibility. As a result, the tyres become brittle.

Dry rot is the silent killer of tyres—weakening rubber, causing cracks, and putting your safety at risk. But with a little care, you can keep your tyres in great condition for longer!

Here, we provide tips on how to prolong the life of your tyres by preventing dry rot.
 

How to Prevent Tyre Dry Rotting

1. Store Properly

Proper storage can significantly extend the lifespan of your tyres. When not in use, store tyres in a cool, dry place, away from direct sunlight and sources of ozone, such as electric motors. Store spare tyres with weatherproof wheel covers to prevent them from drying out, getting exposed to UV rays, and from oxidation.
 

2. Park in Shade

If you’re not using your vehicle often, park in a cool, dry place away from direct sunlight. Prolonged exposure to the sun can accelerate the drying out of rubber, leading to cracks and weakening. Parking in a garage or using a car cover can provide extra protection against UV rays and harsh weather conditions. This simple step can help maintain the flexibility and durability of your tyres.
 

3. Keep Them Clean

Dirt, road salt and chemicals can strip away the natural oils in rubber, which can lead to dry rot. Cleaning your tyres will help remove random substances on the road that can stick to your tyre and cause damage.

When cleaning, avoid using harsh chemicals or petroleum-based products as they can damage the rubber. Instead, opt for mild soap and water or specialised tyre cleaning products. Regular cleaning not only enhances the appearance of your tyres but also contributes to their longevity.
 

4. Maintain Proper Inflation

Under- or over-inflated tyres wear out faster and are more prone to cracking. Regularly check your tyre pressure and ensure they are inflated to the manufacturer’s recommended levels. Proper inflation not only prevents dry rot but also improves fuel efficiency and overall vehicle performance. Make it a habit to check tyre pressure at least once a month and before long trips. Correct tyre pressure also ensures even wear and reduces the risk of tyre failure.
 

5. Drive Regularly

Long periods of inactivity can cause sections of your tyres to get uneven exposure to elements and dry out faster. Regular use will help keep them flexible and can help delay dry rot. If you have a vehicle that you don't drive often, consider taking it for a short drive every few weeks to keep the tyres in good condition. 
 

6. Use Tyre Protectants

Special conditioners help prevent UV and ozone damage, keeping your tyres from drying out. These products create a protective barrier that shields the rubber from harmful elements.

Protectants can be applied during regular maintenance to extend the life of your tyres. To get the best results and to make sure you're not wasting too much product on each tyre, make sure to follow the manufacturer's instructions for application. Regular use of tyre protectants can significantly reduce the risk of dry rot and extend the lifespan of your tyres. 
 

Can Dry Rotted Tyres Be Repaired?

Unfortunately, dry rotted tyres cannot be safely repaired. Unlike a puncture or tread wear that can sometimes be fixed, dry rot compromises the integrity of the rubber itself. Once the rubber begins to crack and deteriorate, it loses its structural strength, making it unsafe to drive on.
 

What to Do if You Have Dry Rotted Tyres

If your tyres show significant signs of dry rot, the safest course of action is to replace them. Driving on cracked, weakened tyres increases the risk of blowouts, poor traction, and unpredictable handling, especially in wet or high-speed conditions.

Temporary solutions such as applying tyre sealants or conditioners might improve appearance but do not restore the tyre’s strength or flexibility. While these materials can help prevent tyre dry rot, they can not fix it.

When it's time to replace your tyres, consider Treadway. We offer good value, high-quality, durable tyres designed to withstand New Zealand’s conditions. Our tyres are built to last and provide excellent performance, ensuring your safety and comfort on the road.

Looking for tyres for different applications? Check out our tyre range here today!