Study finds worn tyres as dangerous as using mobile phone behind the wheel

Modern cars are awesome. They can monitor blind spots, brake automatically and keep themselves centred in a lane. Hell, the latest generation can effectively drive themselves. Yet despite all this technology, every car on the road still relies upon four relatively small patches of rubber to maintain grip with the surface beneath it.

And according to a new UK study, many motorists are treating those tyres with far less attention than they deserve.

Research commissioned by Halfords UK and conducted by Professor Peter Wells from Cardiff University’s Centre for Automotive Industry Research has found that driving on tyres worn down to the legal minimum tread depth may be just as dangerous as driving while distracted by a mobile phone.

The study compared stopping distances between vehicles fitted with healthy tyres, vehicles driven by distracted motorists, and vehicles running tyres worn to the legal tread limit of 1.6mm. The results were striking. At highway speeds, worn tyres produced even longer stopping distances than mobile phone distraction.

In simple terms: a tyre may still be technically legal, but that does not necessarily mean it is performing safely when you suddenly need to stop in wet or unpredictable conditions.

Halfords also released demonstration videos showing the dramatic difference in braking performance between properly maintained tyres and tyres nearing the legal limit. They make for fascinating viewing — partly because the loss of grip is so visually obvious once you see it in action, and partly because most drivers probably don’t realise just how much performance disappears as tread depth wears away.

You can explore the research and videos here:

• Halfords study and article
• WhatTyre analysis of the research
• Halfords demonstration video

What makes the findings especially compelling is that the tyres tested remained within the legal limit. But as this study highlights, “legal” and “safe” are not always identical concepts — particularly during emergency braking or wet-weather driving.

For Australian motorists, the message is refreshingly straightforward. We spend a great deal of time discussing the dangers of mobile phone distraction behind the wheel — and rightly so. But tyres deserve to be part of that same conversation. They are, after all, the only component of your vehicle actually touching the road.

Keep more of an eye out for tyre wear and the road will be a safer place for us all.