Not sure when your tyres need replacing? This guide highlights the most visible signs of tyre wear and damage — from worn tread and slow punctures to sidewall cracks and bulges. Learn how to spot the warning signs early, stay road-safe, and know exactly when it’s time for new tyres.
For many drivers, the most obvious sign that they need new tyres is simply being told to upgrade by their local mechanic or garage. This could come during a service or MOT, or it could be advice given while working on another issue.
Regardless, this information typically comes from a professional eye, using knowledge of tyre age and condition as well as insight into when a tyre is nearing the end of its life.
But if you don’t have plans to take your vehicle to the garage any time soon, you might need something a little more visibly obvious to let you know if and when tyres need replacing. We’re talking things you can spot during a quick inspection, by glancing at the tyre, and by driving around on it.
In this article, we’ve simplified the visible signs of tyre wear and damage, so that even novice drivers can easily identify exactly when a tyre needs replacing.
1. The Tyre Keeps Going Flat
Whether it’s a slow and gradual puncture, or a sudden loss of air, if your tyre is flat / won’t hold its pressure then this is a clear sign of damage.
The question is whether the damage can be repaired, or if the tyre needs to be replaced.
If tyre damage extends no more than 6mm in length / width and is restricted only to the outside tread of the tyre, then it can usually be repaired. If the damage has struck or impacted the sidewall however, this implies more severe underlying damage that could impact the structure of the tyre. In cases like these, the tyre will need to be replaced.
Other things to note, when it comes to tyre pressure, include checking the tyre valve to ensure it isn’t faulty and allowing air to escape.
2. The Tyre Tread is Worn Right Down
One of the easiest things to check on a regular basis is the tyre tread. Not only does tyre tread play an integral role in how effective a tyre’s traction and grip is, but it also directly influences whether a tyre is legal to drive or not.
The legal minimum tread depth that a tyre has to meet is 1.6mm. Any less than this, and drivers face a fine and a ban on driving until they replace their tyres.
Keeping an eye on tread depth and ensuring it’s not only above this limit but also evenly worn across the entire surface of the tyre, is a good way to determine whether tyres are road safe. From here, we typically recommend that driver start to consider sourcing new tyres as soon as their current tyres hit 2mm of tread depth – or immediately if under 2mm / if the tread displays signs of imbalanced wear.
3. You Can See Cracks, Slits, or Bulges in the Sidewall
If the sidewall of your tyre shows any signs of damage, then this is a surefire sign that the tyre needs to be replaced.
While some areas of the tyre can be marked by small and minor imperfections, notably across the dense tread of the tyre, any damage to the sidewall indicates a high chance of some structural issues within the tyre’s construction. This leaves tyres unsafe to drive and in need of immediate replacement.
Other Signs That a Tyre May Need Replacing
The three aforementioned points all point towards a tyre needing immediate replacement. But they are not the only aspects of tyre maintenance that you need to focus on.
If tyre wear is uneven, or you notice the tyre pulling to one side when you drive, there could be an issue with wheel alignment which will cause a tyre to become unusable much more quickly.
Similarly, if tyres are designed for a particular season (e.g., summer tyres) and you are heading into the opposite season, you will need to replace them to ensure optimum safety and traction on the road.
Finally, make sure to check the age of tyres. If they are more than 6 years old, you need to start increasing the regularity of maintenance checks, ensuring that the structural compounds are safe and flexible for continued use.
