Looking for the age of a tyre on your vehicle? Or maybe you’ve just worked out how old your tyres are and want to check they’re still safe?
Either way – don’t panic, we’re here to help. This guide will explain how to find out the age of your tyres from your tyre sidewall, some figures on tyre life, and a few tips on keeping new tyres in the best possible condition.
Quick Answer
To check your tyre’s age, look for the “DOT” code on the sidewall. The last four digits indicate the week and year of manufacture (e.g., 1220 means the 12th week of 2020). Tyres older than six years should be inspected or replaced for safety.
Why Tyre Age Matters
Even tyres that look unused or have plenty of tread might be unsafe due to their age. Over time, the materials in tyres—rubber, textile, and steel—naturally degrade, compromising their strength and reliability. Driving on old tyres increases the risk of cracking, separation of steel belts, and even complete tyre failure, which can be extremely dangerous.
What Happens to Tyres as They Age?
- Material Breakdown
Tyres are made from a combination of rubber, steel, and textiles. As these materials age, they lose their elasticity and bonding strength. - Exposure to Elements
UV rays, heat, and moisture accelerate the degradation process. Even tyres stored indoors are affected over time. - Cracking
Cracks can appear on the surface and within the tyre’s structure. These cracks weaken the tyre’s rubber compound, increasing the likelihood of failure under load. - Steel Belt Separation
In old tyres, the bond between the rubber and the steel belts weakens. This can cause the belts to separate from the tread, leading to catastrophic failure while driving.
How to Check a Tyre’s Age
Finding your tyre’s age is straightforward. Follow these steps:
Example: 2118 would mean the tyre was manufactured in the 21st week of 2018
Step 1: Locate the DOT Code
On the sidewall of every tyre, there’s a code that starts with the letters “DOT” (Department of Transportation). This code provides important information, including the tyre’s place of manufacture and its age.
Step 2: Decode the Last Four Digits
Focus on the last four digits of the DOT code. These numbers indicate the week and year the tyre was manufactured.
- Example: A DOT code ending in 1220 means the tyre was made in the 12th week of 2020.
Step 3: Inspect All Tyres
Check the DOT code on all your tyres, including the spare. Tyres from the same set might have slightly different manufacturing dates.
How Old Is Too Old?
General Guidelines:
- Most tyre manufacturers recommend replacing tyres after 5–6 years, regardless of tread depth or usage.
- Tyres older than 10 years should never be used, as the risk of failure becomes significantly higher.
When to Seek Expert Advice:
If your tyres show visible signs of ageing—such as cracks, bulges, or worn areas—it’s crucial to have them inspected by a tyre maintenance professional immediately.
Additional Tyre Safety Tips
- Regular Inspections
Check your tyres visual condition – including; unusual wear, correct tyre pressure, wheel alignment, and adequate tread depth. Regular inspections can help spot ageing issues early. - Storage Matters
If you’re storing tyres, keep them in a cool, dry place away from direct sunlight and chemicals to minimise degradation. - Replace as a Set
Replacing all four tyres together isn’t a tyre industry trick – it ensures consistent performance and handling. If replacing only two tyres, match the new ones with the existing set’s specifications.
Don’t Take Chances with Old Tyres
Your tyres are the only point of contact between your car and the road – but it’s not just inflation pressure that keeps you safe. Driving on tyres manufactured a long time ago is a serious safety risk that’s not worth taking. If you’re unsure about your tyres’ condition or age, seek expert advice.
Need Help?
If you’re still unsure how to check your tyre’s age or need professional advice, submit a tyre advice request on Auto Hero. A local tyre expert will help you determine whether your tyres are safe or need replacement.
Safety first—because when it comes to tyres, there’s no room for compromise.
Find the best deal on New Tyres with Auto Hero.
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Here’s how we do it.
1. Submit a quote request for tyres below.
2. Local tyre stores will reply and bid for your work
3. You pick the deal that best suits your needs
Written By
Matt Banks
Matt is the founder of Autohero.com.au and has been hooked on cars and repairs ever since childhood. A veteran in automotive since leaving school, Matt has completed his trade as a panel beater and is across all things with wheels.
His first car was a 1967 FORD XR Wagon followed by a string of collectable Holden’s.
Have a question for Matt? leave a comment below.
This is very useful infromation