It’s one of the most important things to know, but there’s still loads of drivers who don’t know how to check the depth of their tyre’s. Driving with a low tread depth increases the likelihood of tyre failure and can reduce grip and control during winter conditions. You also risk a fine, if you’re under the legal limit 3mm.
The easiest way to measure the depth is using a 20p coin. Insert the coin into the lowest tread depth, if you can’t see the outer rim on the edge of the coin, then your tyre is safe. If you can see the rim, then your tyre tread is likely to be less than 3mm and requires checking by a professional mechanic.
Don’t forget that a regular check of your tyre’s can help in avoiding a and 3 points on your licence!