Step by Step Guide
- Ensure your vehicle is safely parked, engine turned off and fully stationary
- Check the overall condition of the tyre, looking for any cuts, bulges, or embedded objects
- Use either a tread depth gauge, or a 20p coin
- The rim of a 20p coin measures approximately 2mm, just over the legal limit
- Place the coin in the main tread of the tyre
- If the rim of the coin is visible above the tyre, then your tread depth maybe too low
- Remember to check all of your tyres
Did you know?
Tyres have wear indicator bars: Raised areas at the base of the tread, serve as a visual warning that the tyre is near to or at the minimum legal tread depth of 1.6mm.
It is recommended that tyres are replaced when 3mm of tread remains. The less tread there is, the greater the stopping distance in the wet, and the greater the risk of skidding.
Worn tyres will aquaplane more easily, the limited tread depth being unable to disperse sufficient water to maintain contact with the road surface.