He says: "This applies to cars, vans, and light trailers ... leaving you liable for damages." As well as the 20p hack, a more accurate measurement for the tyres is by the use of a tread depth ...

The Highway Code specifies that vehicle owners must ensure that their tyres are correctly inflated according to the ...

For instance, if your car's tread depth is below the legal limit ... A simple way to check your tyre tread depth is by using a 20p coin and inserting it into the main grooves of the tyre.