Quick, honest tyre tools for UK drivers
Check how old a tyre is, whether a different size will fit safely, and what the law says about part-worn tyres. Free, no sign-up, and it works offline.
Tyre age checkerEnter the 4-digit date code from the sidewall to see how old a tyre is and when to replace it.Tyre size comparisonCompare two sizes for diameter difference and speedometer error, with a clear verdict.Part-worn tyre checkerCheck a used tyre against UK part-worn rules, plus the 1.6 mm legal tread limit.
Why these three?
They answer the questions that come up most when buying tyres: is this tyre too old, can I fit a different size and is this used tyre legal to sell me. Each tool shows its working and links to the official rules behind it.
Nothing you type is sent anywhere. The sums run on your phone or computer.