A modern tyre's manufacture date is shown by a four-digit code: the first two digits identify the production week, and the last two identify the year. 2424 means week 24 of 2024, not February 2024 and not an expiry date.
Finding that code gives you a useful starting point for an age check. It does not tell you when the tyre was fitted, how it was stored, whether it has suffered damage or how much safe service remains.
Where is the date code on a tyre?
Look on the sidewall for the tyre identification markings. The date is commonly found at the end of the longer DOT identification sequence, often in a small oval panel. Do not mistake the tyre size, a pressure marking or another moulded number for the date.
The full identification sequence can be on just one side. Continental's tyre-identification guidance specifically notes that the complete DOT number, including the date, appears on only one side of the tyres covered by that guidance. If it is absent from the visible face, the other sidewall may need checking.
Use good light and take a clear photograph. If access is awkward, ask a tyre professional to find it. Do not crawl under an unsupported vehicle or remove a wheel simply to obtain a photograph without suitable equipment and knowledge.
Read the four digits in two pairs
For the illustrated 2424 code:
| Part | Meaning | What it does not mean |
|---|---|---|
| First 24 | Production week 24 | Day 24 or a tread-depth measurement |
| Second 24 | Production year 2024 | A replacement deadline |
| Complete code | The week in which the tyre was made | Its fitting date or mileage |
Continental's replacement guidance explains this week-and-year format and the older three-digit system used before 2000. If you find a genuine three-digit production code, do not interpret it as a recent four-digit date with a missing zero. Ask a specialist to identify the tyre and arrange an appropriate replacement rather than relying on remaining tread.
For age records, keep the week as well as the year. A tyre made near the start of a year and one made near its end can differ by almost a year despite sharing the same final two digits.
Manufacture date and time in use are different
A purchase receipt can establish when a tyre was supplied or fitted. It cannot change its production date. Equally, the moulded date cannot tell you how long it sat in storage before fitting.
This distinction matters when following age guidance. Michelin recommends annual professional checks after five years of use and precautionary replacement at ten years from manufacture, including spare tyres. These are two different starting points. The advice is not a promise that a tyre will remain suitable until either milestone.
Follow the relevant tyre and vehicle manufacturer's instructions, including any earlier replacement requirement. A calendar reminder is useful, but it should sit alongside routine condition checks rather than replace them.
Why tread depth does not answer the age question
A lightly used car may still have substantial tread on old tyres. A high-mileage car may wear through a newer set relatively quickly. Neither observation reveals the other's history.
Continental's guidance also recommends replacing tyres more than ten years old, including spares, even where their appearance and tread seem acceptable. It notes that vehicle manufacturers may specify a different age requirement and that wear or damage can require earlier replacement.
The practical questions to take to an inspection are therefore separate:
- What is the manufacture date of each tyre?
- When was each fitted, if records exist?
- What condition is it in now?
- Does the vehicle or tyre manufacturer give a particular age instruction?
- Is there any pressure loss, impact history or change in how the car feels?
For the separate tread measurement, use our UK tyre tread-depth guide. A date-code check cannot substitute for it.
Include the spare and any stored wheel set
It is easy to record the four tyres you see every day and forget the spare beneath the boot floor. Include it in the same record, even if it has never been used on the road. An unused spare still has a manufacture date and needs to meet its own condition and suitability requirements.
The same applies to a stored seasonal set. Keep the tyres' individual dates with the storage record rather than assuming the whole set was produced together. If a tyre is inaccessible, mark the date as unconfirmed until someone can inspect it; do not fill the gap with the car's registration year.
A useful tyre-age record
Use one row per tyre. Record its current position, brand and model, full size, date code, fitting date if known, and the date of the latest inspection. Add a photograph of the markings and keep the invoice separately.
This makes future conversations more precise. “The rear-left tyre shows 2424 and was fitted in September 2024” is useful information. “They are about two years old” leaves it unclear whether you mean the purchase, manufacture or vehicle age.
When comparing a replacement wheel-and-tyre order, confirm the actual tyre specification being supplied. Our wheels-only versus wheel-and-tyre packages guide explains what to establish before ordering. You can also contact Wheel City with the vehicle details and the proposed package.
Frequently asked questions
Does 2424 mean the tyre expires in 2024?
No. It identifies production in week 24 of 2024. Replacement decisions also depend on condition and the applicable manufacturer guidance.
Do all four tyres have the same date code?
Do not assume so. Check and record each tyre, including replacements fitted separately and any spare.
Can I calculate tyre age from the car's registration?
No. The fitted tyres may have been changed, and their manufacture dates are independent of the registration date.
Is a recent date code proof that a tyre is safe?
No. It cannot rule out damage, unsuitable specification or a problem caused during use. Have concerning symptoms inspected regardless of age.
What if the code is unreadable?
Ask a tyre professional to identify it and assess the tyre. Keep it recorded as unknown until verified rather than guessing from another number on the sidewall.