Drivers warned over little-known tyre rule that could result in £100 fine and three points

Motorists have been warned about a less commonly known tyre rule that could potentially earn them a fine of £100 and three penalty points on their licence, according to a car expert. With the escalating cost of living burdening drivers, many might be tempted to skimp when it comes time to replace their car tyres in order to save money.

However, mixing and matching tyres - having different types of tyres on the same axle - is an offence that could land you on the wrong side of the law. Graham Conway, Managing Director at Select Car Leasing, has cautioned drivers about the possible repercussions of such actions.

Mr Conway said: "To a lot of people, all tyres look similar, and you might assume they all perform in the same way so long as you choose the correct size.

Read more: Warning over 'no flash' cameras

"But there are big differences between the types of tyres available - beyond just the brand - and mixing and matching them can be dangerous and illegal. While it might be tempting to simply choose the most affordable tyre you can, particularly if you're ordering online and then have it fitted at a garage, you could be making a costly mistake. In the eyes of the law, tyres must be of a consistent type on the axle".

He proceeded to explain how to guarantee matching tyres. The tyres must be of the 'radial-ply' or 'cross-ply' type, which are the prevalent types.

'Ply' refers to the layers of construction that lie beneath the tyre's surface rubber, providing its strength. Additionally, the tyres should exhibit the same tread pattern and depth.

It's also recommended that tyres should have the same tyre tread pattern and tread depth. Both of these can vary widely between different manufacturers. Non-matching tyres can produce inconsistent performance on the road, where you're more likely to lose grip and potentially skid. For example, in wet conditions the incorrect tyres may not be able to displace enough water and could result in aquaplaning and a potential crash.

Seriously mismatched tyres can even result in damage to wheel bearings and the clutch, as well as meaning you'll probably end up using more fuel.