Understanding the legal minimum tread depth in the UK is essential for every driver. Here's what you need to know to stay safe and legal on the road.
What is the Legal Minimum Tread Depth?
In the UK, the legal minimum tread depth is 1.6mm across the central three-quarters of the tyre, around its entire circumference. This applies to all cars, vans, and light commercial vehicles. Driving with tyres below this limit is not only dangerous — it's illegal and can result in serious penalties.
Each illegal tyre carries a fine of up to £2,500 and 3 penalty points on your licence. Four illegal tyres could mean a £10,000 fine and 12 points — an automatic ban.
How to Check Your Tread Depth
The easiest way to check your tyre tread is the 20p test. Insert a 20p coin into the main grooves of your tyre. If you can see the outer band of the coin, your tread may be below the legal limit and you should get your tyres checked by a professional.
- Place a 20p coin into the main tread groove
- If the outer band of the coin is visible, your tread is low
- Check at several points around the tyre
- Repeat for all four tyres
- If in doubt, visit us for a free tyre check
When Should You Replace Your Tyres?
While 1.6mm is the legal minimum, most tyre safety experts recommend replacing tyres at 3mm. Braking distances increase significantly below this level, especially in wet conditions. At 1.6mm, braking distance in the wet can be up to 44% longer than at 3mm.
At New Tyre Empire, we offer free tyre checks and honest advice. If your tyres need replacing, we'll find you the best deal on quality new tyres — all fitted, balanced, and ready to go.
