Keeping your car road-legal in the UK is more than just about passing your MOT—car safety starts with your tyres. As of 2025, the UK has introduced revised regulations and inspection criteria that place even more emphasis on tyre health, tread depth, and maintenance habits. Whether you’re a new driver or a long-time car owner, understanding these tyre rules is essential for avoiding fines and staying safe on the road.
The DVSA and other transport authorities have updated the inspection checklist used during road stops and MOTs to make sure all UK vehicles meet strict safety standards. Tyres are your car’s only contact point with the road, and failure to maintain them properly can now lead to immediate penalties or MOT failure.
Minimum Tyre Requirements in 2025
To comply with the latest car safety regulations, make sure your tyres meet the following standards:
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Tread Depth: Minimum legal tread depth remains at 1.6mm, but DVSA now advises replacement below 2mm for better grip.
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Tyre Pressure: All tyres must match the recommended PSI for your vehicle. Underinflated or overinflated tyres can lead to fines.
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Tyre Damage: Sidewall cracks, bulges, or exposed cords will lead to immediate MOT failure.
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Mismatched Tyres: Using different tread types (e.g. winter tyre + summer tyre) on the same axle is now flagged in inspections.
Regular checks will help keep your vehicle compliant with UK tyre law and improve handling and fuel efficiency.
How to Perform a Proper Tyre Check
To stay aligned with legal safety rules, follow this quick inspection guide:
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Use a 20p coin to test tread depth. If you can see the coin’s border, your tyre tread is too low.
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Check tyre pressure monthly using a reliable gauge or petrol station air machine.
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Inspect sidewalls for cuts, punctures, or cracks.
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Look for even wear patterns; uneven wear could indicate alignment or suspension issues.
UK motorists are encouraged to do this car safety check once every two weeks or before long trips.
What the 2025 Tyre Law Means for UK Drivers
The new rules go beyond MOTs—spot checks on roads are being intensified. Police and DVSA officers can now issue fines on the spot for visibly unsafe tyres. Here’s what you risk:
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£100 fine and 3 penalty points per illegal tyre
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Insurance invalidation in case of an accident due to faulty tyres
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Vehicle impoundment for repeated violations or dangerously worn tyres
As part of the updated UK vehicles regulation plan, tyre condition is considered a primary safety concern, not just a maintenance issue.
Tips to Stay Ahead of the Inspection Checklist
Don’t wait until your MOT to check your tyres. These simple tips can keep your vehicle road-legal and safe:
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Rotate tyres every 6,000 miles to ensure even wear.
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Replace tyres before hitting the 1.6mm minimum.
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Install tyre pressure monitoring systems if not already equipped.
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Use season-appropriate tyres—switch to winter tyres during colder months for improved car safety.
Proactive maintenance is not just good for your tyres—it keeps you, your passengers, and other road users safe.
2025 Legal Tyre Checklist for UK Vehicles
| Inspection Area | Requirement | Action Needed |
|---|---|---|
| Tread Depth | At least 1.6mm (2mm recommended) | Use 20p coin or tread gauge |
| Tyre Pressure | Within manufacturer’s PSI range | Check monthly or as needed |
| Physical Condition | No bulges, cracks, exposed wires | Inspect sidewalls regularly |
| Tyre Matching | Same type on each axle | Avoid mixing tread patterns |
| TPMS (if equipped) | Must be operational | Repair warning systems immediately |
Following this table ensures your car passes any surprise inspections and meets all legal safety standards.
FAQs
What is the legal minimum tread depth for tyres in the UK in 2025?
The legal minimum is 1.6mm, but DVSA recommends changing tyres once tread drops below 2mm for optimal car safety.
How often should I check my car tyres in the UK?
You should inspect your tyres at least once every two weeks and before long journeys, including pressure, tread depth, and overall condition.
Can I be fined for mismatched tyres in 2025?
Yes, having different types of tyres on the same axle (e.g. summer and winter) can now result in fines or MOT failure.
Will a tyre pressure warning light fail my MOT?
Yes, if your vehicle is equipped with a Tyre Pressure Monitoring System (TPMS), a malfunctioning light can now lead to MOT failure.
What happens if I drive with illegal tyres in the UK?
You may be fined £100 and get 3 points on your licence per illegal tyre, and your insurance could be void if involved in an accident.
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