Do you know your tyre expiry date?

12 August 2019

Tyres are some of the most overlooked wear and tear components in a car because it’s sadly a part that people seemingly underestimate the importance of.

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Tyres are some of the most overlooked wear and tear components in a car because it’s sadly a part that people seemingly underestimate the importance of. When was the last time you had a good look at your tyres? Most likely not often enough. There is no such thing as a tyre expiry date but there is such a thing as a tyre lifespan.

With tyres being essentially the only thing that keeps you on the road, it’s absolutely imperative that they are in good condition and safe to actually drive on. Even if you rarely take your car out for a drive, it’s still important to check your tyres at a set interval simply because of the properties of a tyre. Here are some things you should look out for while inspecting your tyre’s condition:


Here’s exactly why you don’t want to keep your tyres around for too long: tyres age over time. Even if you never drive your car, the tyres will age over time and eventually prove to be dangerous to drive on.

So why do tyres degrade slowly over time? The major ingredient of tyres is rubber, specifically processed rubber that’s reinforced to handle impressive loads. Rubber is an organic material that will harden over time as it absorbs radiation from the sun. (This is called vulcanisation.)

Tyres also oxidise, where a combination of oxygen and ozone can negatively impact tyre strength and elasticity. It also causes a tyre to harden over time. Finally, while tyres are water resistant to a certain degree, water over time will seep into the material, bonding with the metallic materials and compromising the strength and heat resilience of a tyre.


Now that you understand the basic construction of a tyre and what invisible factors actually cause it to age, how do you know if a tyre is too old? Since tyres are supposedly flexible, hardening causes it to develop cracks and become brittle, almost like it deteriorate into a plastic. Old tyres will have cracks all over them – and when you see cracks, it’s definitely time to get new tyres.

The other method to calculate your tyre age: Find four numeric digits located at the sidewall, typically next to the DOT certification. The first two corresponds to the week, while the latter two represents the year. For example, 2715 means that your tyre is manufactured in the 27th week in the year 2015. If your tyres are 10 years old, replace them immediately even if it seems usable. After five years of use or so, as a precaution, you should get your tyres inspected regularly. 

Also, a common mistake that people make is forgetting about the spare tyre. Whenever you check your tyre pressure, be sure to take a look at your spare too, even if it's specially formulated to endure long periods of non-usage.


I know it may be hard tossing away tyres that are seemingly in top-notch condition with plentiful tread remaining, but the rubber compound degrades over time. This causes the steel belts within, an important structural component, to separate, seriously undermining tyre strength.  

And when you’re driving a car – essentially a machine - over 60 miles an hour on the motorway, the last thing you want is a blowout that sends you straight to the divider. Never take chances on your tyres, they’re the sole reason your car remains straight and true on the road.

Did you know that MotorHappy can help if you ever find yourself on the side of the road with a flat tyre? When you invest in a Service Plan or Maintenance Plan through MotorHappy, you will have the peace of mind knowing that you will get assistance with tyre change, fuel runs, message-relay, jump-start, and key lockout. Not only will you get peace of mind knowing the financial aspect of your car maintenance is cared for, but you can also rest easy knowing we’re here to help you if you ever find yourself stranded on the side of the road! Contact us today for a quick online quote. 

Disclaimer

This article is intended to be used and must be used for informational purposes only. We do not make any warranties about the completeness, reliability and accuracy of this information. Any action you take upon the information in this article is strictly at your own risk. We will not be liable for any losses and/or damages in connection with the use of the information contained in this article.

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