Use the registration search to match the correct fitment, or check your current tyre sidewall for the size format (for example 235/55 R20). Sizes can vary by trim level and wheel option.
It is best to fit matching tyres on the same axle, with the same size, load index and speed rating. Mixing patterns can affect grip and stability systems, particularly in wet UK conditions.
Many RX 450h L fitments use higher load ratings and may specify XL or reinforced tyres due to vehicle weight. Always follow the load index shown in your search results and on your existing tyres.
If your RX 450h L is AWD, keep tread depths closely matched across all wheels to protect handling and the drivetrain. If one tyre is damaged, replacing in pairs or a full set may be recommended depending on the remaining tread.
The UK legal minimum is 1.6 mm across the central three-quarters of the tyre, around the full circumference. Many drivers choose to replace at around 3 mm to maintain stronger wet braking and reduce aquaplaning risk.
