Check the tyre sidewall for a size string that reads 205/60 R16, then match it to your vehicle handbook or the tyre label on the driver door pillar or fuel flap. Also confirm the load index and speed rating (the numbers and letter after the size) so you buy a like-for-like replacement that meets the car maker requirement.
Usually you should keep 205/60 R16 unless your vehicle manufacturer lists an approved alternative size for your exact model and trim. Changing profile or width alters rolling circumference and can affect speedometer accuracy, ride height and clearance. If you are considering a change, check the approved sizes in the handbook and keep the correct load index and speed rating.
Use the ratings shown on your current tyres or the vehicle placard, and do not go below the manufacturer minimum. This size is often fitted to heavier family cars and MPVs, so the correct load rating matters for stability when carrying passengers and luggage. If you are unsure, choose the same ratings as fitted now and filter results to that exact specification.
All-season options can suit this size well if you drive year-round in mixed UK conditions and want one set to handle cool, wet roads and light snow. Look for the 3PMSF marking (three-peak mountain snowflake) if you want improved winter capability, and compare wet braking and noise figures to find the best balance for your vehicle.
For consistent handling and grip, replacing in pairs is the minimum most drivers choose, and fitting the new pair on the rear axle is commonly recommended for stability (unless your vehicle manufacturer advises otherwise). Replacing all four can be best if wear levels are uneven or if you want matching tread patterns across the car, especially on vehicles that are sensitive to tyre differences.