Motorists are being urged to keep a 20p coin in their vehicle to perform a simple tyre tread check that could prevent fines of up to £10,000. The RAC warns that driving with bald tyres is not only dangerous but can lead to severe penalties, including a £2,500 fine and three penalty points per tyre, and potential court summons and licence revocation if all four tyres are below the legal limit.
The UK legal minimum tyre tread depth for cars, caravans, and vans is 1.6mm, but experts recommend replacing tyres at 3mm. The RAC cites tests by MIRA showing that stopping distances increase dramatically below 3mm, with wet braking distance differences of up to 44% compared to 1.6mm. Worn tyres reduce water dispersion, increasing aquaplaning risk.
Drivers can perform the 20p test by inserting the coin into the tyre tread grooves. If the outer band of the coin is visible, the tyres may be unsafe and require professional inspection. Regular checks, including air pressure and overall condition, are advised at least fortnightly and before long journeys.
Tyre depth gauges are available for under £10 from retailers like Amazon, Halfords, and Screwfix, but the 20p coin offers a quick, free alternative. The RAC emphasises that tyres are the only contact point with the road, and neglecting them compromises safety.
