Use the values printed on your tyre or measured with a suitable gauge. TyreDeck explains the result but does not certify a tyre, wheel or vehicle as safe.
What this tells you
Load and speed markings are service ratings. Never downgrade from the vehicle manufacturer’s approved requirement merely because a tyre fits the rim.
Use it properly
Enter the service description exactly as moulded on the tyre. The decoder covers common ratings; confirm the approved requirement for the vehicle before buying.
Safety note
If you see a bulge, exposed cord, serious cut, rapid pressure loss or a visibly flat tyre, avoid unnecessary driving and arrange a competent physical inspection.
Source and review
UK guidance · Reviewed 2026-08-29 · Official source