It breaks down into key measurements: 295 is the tyre width in millimetres, 35 is the aspect ratio (sidewall height as a percentage of the width), R means radial construction, and 23 is the wheel diameter in inches. Matching these numbers exactly to your required fitment ensures the tyre seats correctly on the rim and maintains the intended rolling radius.
Only if your vehicle is approved for it. Check the tyre placard (often on the driver door shut or fuel flap) and your V5C or handbook for permitted sizes, then confirm the wheel is a 23 inch rim with a compatible width. If your car originally came with 21 or 22 inch wheels, you will need the correct 23 inch wheels and may also need insurer approval for the change.
Use the exact load index and speed rating specified by the vehicle manufacturer, as this size is often used on heavier, high-powered SUVs. Many options in this size are XL (extra load), which is common for large 4x4s, but you should still match the numbers and letters shown on your current tyre sidewall or vehicle placard. Choosing the correct rating supports safe handling, braking and carrying capacity.
Availability can be more limited than smaller sizes, but all-season options are often available, while true winter tyres may be less common. If you drive year-round in mixed UK conditions, an all-season tyre with the 3PMSF marking can be a practical choice, provided it is offered with the correct load and speed rating for your vehicle. If you need dedicated winter performance, check stock early and consider whether your vehicle has alternative approved winter wheel sizes.
If your vehicle runs a wider rear tyre size and a different front size, replace tyres in axle pairs to keep grip and handling balanced. Avoid mixing very different tread patterns or performance categories across the same axle, and for AWD systems follow the manufacturer guidance on matching tread depths. If only one tyre is being changed, confirm the remaining tyre has adequate tread and the same specification to minimise uneven behaviour under load.
