What does the E4 number mean on UK car tyres?

The E4 number on UK car tyres indicates the tyre meets ECE R30 or R54 safety standards. This marking shows the tyre is approved for use in the UK and EU. Popular UK models like the Vauxhall Corsa, Ford Fiesta, and Volkswagen Golf all use tyres with these ECE markings. The E4 specifically refers to the country where the tyre was certified (in this case, the Netherlands). UK drivers should look for either E4 or E11 (UK approval mark) when buying new tyres. All tyres must meet these standards to be legally roadworthy in the UK, providing essential safety features including proper grip, load capacity, and durability. When replacing tyres on common UK cars like the Nissan Qashqai or BMW 1 Series, always check for these markings to ensure compliance with UK regulations.