Should I replace one tyre or a pair in the UK?

In the UK, you should replace both tyres on the same axle if one is significantly worn, but can replace just one if the other tyre has sufficient tread depth remaining. For optimal safety and performance, most UK garages recommend replacing tyres in pairs, especially on the same axle. When replacing tyres on popular UK models like the Vauxhall Corsa or Ford Fiesta, consider that mismatched tread depths can affect handling, particularly in wet conditions common in Britain. The legal minimum tread depth in the UK is 1.6mm across the central three-quarters of the tyre, but experts recommend changing at 3mm for better wet weather grip. Always match the new tyre's specifications (size, speed rating, load index) to your vehicle's requirements and consider replacing all four tyres if they're all nearing the legal limit.