The Tyre Puncture Law UK has seen significant updates in 2025, aimed at improving road safety and reducing accidents caused by worn-out or illegally repaired tyres. The UK government, in collaboration with DVSA, has imposed stricter guidelines on tread depth, repair eligibility, and penalties for non-compliance. Tyres are one of the most vital safety components of a vehicle, and the latest laws ensure that all vehicles meet minimum legal requirements before getting on the road.
Whether you’re a daily commuter or a commercial driver, it’s essential to understand the 2025 tyre rules to avoid fines and MOT fail status.
Legal Minimum Tread Depth & Inspection Rules
As per UK tyre law, the legal minimum tread depth for cars remains 1.6mm across the central three-quarters of the tyre, around the entire circumference. However, in 2025, traffic officers and MOT testers have been instructed to be more vigilant with borderline tread wear and improperly repaired punctures.
Important updates in 2025:
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If tread depth is below 2mm, drivers will receive a warning to replace tyres before the next MOT fail risk.
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Spot checks will now include visual inspection of sidewall damage.
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Use of illegal retreads or improperly patched tyres is strictly prohibited.
Motorists found driving with below-legal tread depth can face an immediate fine and 3 penalty points per tyre.
New Rules for Tyre Puncture Repairs
The updated Tyre Puncture Law UK now classifies how and where a tyre can be repaired:
Key repair regulations:
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Only tyres punctured in the central 60% of the tread area can be legally repaired.
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Sidewall punctures or damage close to the shoulder of the tyre cannot be repaired and require full replacement.
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Patches must comply with BS AU 159 standards.
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Mobile puncture services must maintain digital logs of all repairs conducted.
These changes help eliminate low-quality roadside fixes that compromise vehicle safety. The changes align with European tyre standards and are now fully enforceable in MOT checks.
Fines and MOT Failure Related to Tyres
Tyres that do not meet the revised 2025 regulations can lead to an automatic MOT fail. If stopped by traffic officers, non-compliant tyres attract harsh penalties even if you have a valid MOT certificate.
Penalty breakdown:
| Offence | Fine | Points |
|---|---|---|
| Tread depth below 1.6mm | £2,500 per tyre | 3 points |
| Using a damaged or sidewall-patched tyre | £2,500 per tyre | 3 points |
| Driving with mismatched or unsafe tyres | Up to £5,000 | 6 points or more |
By adhering to UK tyre law, drivers can avoid unnecessary costs and ensure maximum road grip during wet and icy conditions.
How to Stay Compliant with Tyre Laws
Regular inspection and timely tyre replacements are key to compliance. Many garages and tyre dealers now offer free tread depth checks as part of a basic service.
Tyre safety checklist:
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Measure tread depth monthly using a gauge or 20p coin method
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Replace tyres at 2mm to avoid reaching the legal limit
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Avoid puncture repairs near the sidewall or tread shoulder
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Always get tyres fitted by licensed professionals
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Rotate tyres every 5,000–8,000 miles for even wear
Following these tips will ensure your tyres meet 2025 safety and UK tyre law standards.
FAQs
What is the legal tread depth in the UK for 2025?
It remains 1.6mm, but it is now strongly advised to replace tyres once the tread reaches 2mm to avoid future MOT fail issues.
Can all punctures be repaired legally?
No, only punctures in the central 60% of the tread are repairable. Sidewall or shoulder damage must result in tyre replacement under the Tyre Puncture Law UK.
What happens if I fail my MOT due to tyres?
Your vehicle will be marked unroadworthy, and you must replace the tyres and get a re-test to pass. Driving in the meantime is illegal.
Are mobile puncture repairs legal in 2025?
Yes, but they must comply with new repair standards and submit digital repair logs to DVSA.
What fine do I face for bald tyres?
Each illegal tyre can cost you £2,500 and 3 penalty points under updated UK tyre law rules.
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