Check the tyre size printed on your current tyre sidewall and compare it with the tyre size listed on the driver door sticker or in the handbook. If all three sources show 265/65 R18, you can shop confidently in this size. If your vehicle has multiple approved sizes, keep the same overall specification by matching the required load index and speed rating.
Start with the minimum load index and speed rating specified by your vehicle manufacturer, then select a tyre that meets or exceeds it. In this size, higher load ratings are common because it is often used on heavier SUVs and 4x4s, especially when carrying passengers, kit or towing. If you tow regularly, prioritise the correct load rating first, then choose a tread pattern that suits your driving.
Road-focused patterns suit mainly tarmac driving, with lower noise and sharper wet-road performance. All-terrain tyres are better if you frequently use gravel tracks, fields or muddy lanes, thanks to a more open tread design and tougher construction, but they can be louder and less efficient on the motorway. Choose based on where your miles really happen, then compare options within 265/65 R18 to match that use.
Mixing sizes is not recommended, and you should never fit different sizes on the same axle. On many 4x4 and AWD systems, even small differences in rolling circumference can strain the drivetrain and affect handling, braking and stability systems. For best results, fit a matching set of 265/65 R18 tyres with the same specification and similar tread depth.
Use the cold tyre pressures shown on your vehicle door placard or in the handbook, as they are set for your vehicle weight and axle loads. Pressures can differ front to rear, and they may change for heavy loads or towing, so follow the manufacturer guidance for those conditions. Check pressures regularly with a reliable gauge, especially before long trips.
