When Should You Replace Your Tyres? What 7 Warning Signs You Should Look Out For
14 August 2026
Your tyres will not last forever, but it’s not always obvious when they need replacing. While some problems are easy to see, others may first appear as a change in how your car handles, sounds or feels on the road.
Knowing the signs that your tyres need replacing can help you act before their condition affects grip, braking or safety. Below are seven warning signs to look out for.
1. The tread is approaching the legal limit
Tyre tread helps your vehicle maintain effective traction on the road surface, particularly when driving in wet conditions. As the tread wears down, the tyre becomes less effective at dispersing water, which can reduce grip and increase the risk of aquaplaning.
The legal minimum tread depth for cars in the UK is 1.6 mm across the central three-quarters of the tyre and around its entire circumference. However, you should not necessarily wait until your tyres reach the legal limit before considering replacements.
You can carry out a quick check using a 20p coin. Insert the coin into several of the main tread grooves around the tyre. If the outer band of the coin remains visible, the tread may be too low and should be checked with an accurate tread-depth gauge.
Remember to check several points across every tyre, as tread does not always wear evenly.
2. Your tyres are wearing unevenly
A tyre may still have plenty of tread in one area but be significantly worn elsewhere. Common uneven tyre wear patterns include:
- More wear along one edge
- Excessive wear in the centre
- Wear on both outer edges
- Patches of uneven or rippled tread
- Feathered tread that feels smooth in one direction and rough in the other
Uneven wear may be caused by incorrect tyre pressure, poor wheel alignment, worn suspension components or wheels that are not properly balanced.
Replacing the affected tyre might only solve part of the problem. The underlying cause also needs to be identified, or the replacement could begin wearing unevenly, too.
3. You can see cracks, cuts or exposed cords
Take a close look at the tread and sidewalls of each tyre. Small stones caught in the tread and superficial marks are common, but deeper cuts, significant cracking or visible cords can indicate that the tyre’s structure has been compromised.
Cracking can develop as the rubber ages and loses flexibility. It may appear around the sidewall or between the tread blocks, even when the vehicle is not driven regularly.
A tyre with exposed cords, deep cuts or serious deterioration should not be ignored. If you are unsure how severe the damage is, arrange a professional inspection rather than continuing to drive on it. Book a mobile tyre fitting today and let us come to you.
4. There is a bulge in the sidewall
A bulge or lump in a tyre’s sidewall is a serious warning sign. It usually means that the internal structure has been damaged, allowing air pressure to push against a weakened section of rubber.
Sidewall bulges can be caused by hitting a pothole, mounting a kerb or driving over road debris. The damage may not appear immediately, so it is worth checking your tyres after a significant impact.
A bulging tyre can fail without warning and cannot normally be repaired. Avoid driving on it and arrange for the tyre to be inspected and replaced as soon as possible.
5. One tyre keeps losing pressure
It is normal for tyres to lose a small amount of air gradually. However, if you repeatedly need to inflate the same tyre, something may be wrong.
Ongoing pressure loss could be caused by:
- A slow puncture
- A damaged tyre valve
- Corrosion around the wheel rim
- Damage to the tyre bead
- A poorly sealed puncture repair
- Cracks or other tyre damage
Do not assume that repeatedly topping up the tyre is enough. A professional can identify where the air is escaping from and determine whether the tyre can be safely repaired or needs replacing.
6. Your car feels different to drive
Changes in handling can sometimes indicate a problem with one or more tyres. You might notice:
- Vibration through the steering wheel
- The vehicle pulling to one side
- Reduced grip when cornering
- A less stable or comfortable ride
- Humming, thumping or unusual road noise
- Longer braking distances
These symptoms can have several causes, including incorrect tyre pressure, uneven tyre wear, wheel-balancing problems or suspension faults. They may also point to internal tyre damage that is not visible from the outside.
If your car suddenly feels different, have it checked rather than waiting for the problem to become more noticeable.
7. Your tyres are getting old
Tyre age matters even when there is plenty of tread remaining. Rubber gradually hardens and deteriorates due to exposure to sunlight, changing temperatures and weather conditions.
Age-related deterioration can be a particular concern for vehicles that cover relatively few miles, including second cars, classic cars and vehicles that spend long periods parked. The tread might appear almost new while the rubber itself has begun to age.
You can find the tyre’s manufacturing date in a four-digit code on its sidewall. The first two digits represent the week of manufacture and the final two show the year. For example, “2426” means the tyre was manufactured during the 24th week of 2026.
There is no single recommended replacement age that applies to every car tyre, so consider the tyre manufacturer’s guidance and have older tyres inspected regularly.
How long do car tyres last?
There is no exact answer to how long car tyres last. Their lifespan depends on several factors, including:
- The number of miles you drive
- Your driving style
- Road and weather conditions
- Tyre pressure
- Wheel alignment
- Vehicle weight
- Tyre quality
- How the vehicle is stored
- Whether the tyres are checked regularly and well maintained
Some tyres may need replacing because their tread has worn down, while others may deteriorate with age despite covering very few miles. That is why both mileage and condition should be considered when deciding when to replace tyres.
Monthly checks and inspections before long journeys can help you spot developing problems early.
Should you replace one, two or all four tyres?
The number of tyres you need to replace will depend on their condition and your vehicle.
If only one tyre is damaged, a suitable replacement may be fitted. However, the new tyre must be compatible with the tyre on the opposite side of the axle. In many cases, replacing tyres in pairs can provide more balanced grip and handling.
There may also be additional requirements for four-wheel-drive and all-wheel-drive vehicles, as significant differences in tread depth can affect their drivetrain. Always check the vehicle manufacturer’s guidance and seek professional advice if you are unsure.
Do not wait for an MOT failure
Your MOT includes checks of tyre tread depth, tyre size, type and general condition, but you should not rely on the annual test to tell you when your tyres need attention.
Checking them regularly allows you to spot wear and damage before they cause an MOT failure or begin affecting the way your car performs.
Think your tyres need replacing?
If you have noticed any of these warning signs, visit your local Setyres centre for professional advice. The team can assess your tyre tread, pressure and overall condition before helping you find suitable replacement tyres for your vehicle and budget.
Alternatively, enter your vehicle registration or tyre size online to explore the range of tyres available from Setyres.
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