How Old Are Your Tires? Read the Date Code and Check the Whole Picture
Tread depth and a manufacturing date are only part of the picture. Combine tire age, condition and known history before deciding on another season.
A tire can have visible tread remaining and still need replacement. Equally, reading a manufacturing date does not give you a complete picture of its condition. Before deciding that an older set is ready for another season, bring together its age, inspection findings and the history you actually know.
For drivers in Bolton and Caledon, a seasonal tire appointment is a useful time to ask those questions. The goal is a supported decision about each tire, rather than assuming that low mileage means unlimited life or that one calendar rule explains every situation.
Read the manufacturing date correctly
On modern tires, the last four digits of the DOT identification code show the week and year of manufacture. For example, 2522 means the twenty-fifth week of 2022. It does not mean the tire was bought then, first installed then or used continuously since then.
Photograph the complete marking if it is accessible while the vehicle is safely parked. Include enough of the surrounding sidewall to help distinguish the date code from other numbers. If the marking is difficult to find or faces inward, ask the shop to record it during an inspection. Do not crawl underneath or remove a wheel just to obtain a photograph.
Check each tire rather than assuming all four have the same date. A set may include a previous replacement, and an invoice for two tires does not establish the history of the other two. Keep the code and wheel position together in your notes so the information remains useful.
Keep three different dates separate
The manufacturing date, purchase date and installation date answer different questions. A receipt helps establish when a sale occurred. The sidewall establishes when the tire was made. Your records may show when it entered service or when it was fitted to this particular vehicle.
If you bought the vehicle used, distinguish what the previous owner told you from what an invoice confirms. If you do not know when the tires were first used, say so. An honest gap in the history is more helpful than an estimate that later gets repeated as a fact.
For a seasonal set, record the years it was used as well as any known periods in storage. Do not subtract stored months from the manufacturing age. Keep storage history as additional information for the person assessing the tires, not as a way to reset their dates.
Understand what an age recommendation means
Michelin recommends a thorough professional inspection at least annually after five years of use. It also recommends replacement as a precaution ten years after manufacture, including spare tires, even when tread remains. Its guidance says to follow the vehicle manufacturer's replacement recommendations for original-equipment tires.
Those are Michelin's published recommendations, not a promise that every tire is safe until its tenth birthday. Check the guidance for your tire and vehicle manufacturers, including any earlier replacement recommendation. A damaged or worn tire may need attention long before an age limit is reached.
Ask the shop to identify the basis of its recommendation: a manufacturer instruction, a measured condition, damage or a combination of findings. That explanation is more useful than a statement that tires simply “expire” at one universal age.
Treat condition as a separate decision
Transport Canada advises regular checks for damage and excessive or uneven wear. Its guidance identifies deep cuts, cracks, blisters and bulges as potentially dangerous. It also explains that a tire can be underinflated without looking obviously flat. A photograph of the tread alone cannot settle those questions.
If you see a bulge, exposed material or other serious damage, arrange professional advice before driving on the tire. Do not make an extra road trip to test whether it still feels normal. Tell the shop about pressure loss or a handling change and let the assessment determine the next step.
Ask for the condition of each tire to be recorded. If the recommendation is based on wear, ask where it was measured. If it is based on damage, ask which area is affected. An inspection record should help you understand the decision without requiring you to become a tire specialist.
Bring the history that a date code cannot show
A manufacturing code cannot tell the technician whether a tire was driven while very low on pressure, struck a curb or received a previous repair. Bring that information if you have it. Include any recent pressure alerts, recurring top-ups or vibration noticed during ordinary driving.
Be precise about uncertainty. “The pressure warning appeared twice last month” is a useful observation. “The tire is leaking because it is old” is a diagnosis that still needs evidence. Age can be relevant without being the established cause of a particular symptom.
If you have changed vehicles or acquired a second-hand set, ask about suitability for the current vehicle as well as age. A favourable condition report does not by itself establish that a tire's size and specifications are appropriate for another car. Bring the vehicle details and existing tire information to the appointment.
Make the replacement decision reviewable
Before authorizing work, ask which tires are being recommended for replacement and why. If the remaining tires are considered suitable for continued use, ask what follow-up is advised. Keep the written findings alongside the purchase and installation records so the next inspection starts from a clear history.
Do not let a date-code discussion obscure a current driving complaint. If there is vibration, uneven wear or repeated pressure loss, ask how that concern will be investigated. Replacing tires may be necessary, but the cause of an abnormal wear pattern or other symptom should also be considered before assuming the job is finished.
Review our service information or contact Albion Auto Service with your vehicle details and tire records. The useful question is not only “How old are these tires?” It is whether the evidence supports continued use and what action is needed now.
Featured image: AI-generated illustration of a generic tire and wheel secured in a support cradle. It is not an Albion Auto shop or customer photograph, and the image is not a reference for reading a real tire date code.
Common questions
Does the date code show when I bought the tire?
No. The last four digits show its manufacturing week and year. Keep purchase and installation records separately.
Does low mileage guarantee an older tire is safe?
No. Age, condition, damage and the known history all matter. Follow the applicable manufacturer guidance and inspection findings.
Does one date code apply to the whole set?
Do not assume so. Record each tire separately, since previous replacements may have different manufacturing dates.
