Check the tyre sidewall (for example 215/55 R17), your owner’s handbook, or the sticker in the driver door shut. Match the size and also confirm the load and speed rating when choosing replacements.
A reg search usually matches your vehicle to UK records, but some trims can have multiple approved sizes. If you see more than one option, confirm the size currently fitted on your tyres before buying.
The legal minimum is 1.6mm across the central three-quarters of the tyre, around the full circumference. Many drivers replace earlier (often around 3mm) for better wet grip and shorter stopping distances.
It’s strongly recommended to fit matching tyres on the same axle (same size, construction and similar tread depth) to maintain balanced grip and predictable handling. If one tyre is worn or damaged, replacing the pair is often the safest choice.
After choosing your tyres, select a fitting partner near you, pick a date and time, and confirm the booking. The garage fits the tyres and typically disposes of the old ones, with any extras (like valves or alignment checks) discussed at the appointment.