The Law
The legal minimum tyre tread depth across Europe for passenger car tyres has been set at 1.6mm across the central three-quarters of the tyre since the early 1990’s.
Even a two-minute run to the shops could result in a £60 fine (per illegal tyre), 3 points (per illegal tyre) on your licence and invalidate your insurance.
Performance
The results during government tests illustrate that, significant increases in stopping distance begin to manifest themselves at tread depths below approximately 3mm.