Checking your tyres' tread depths isn't difficult, nor do you need any high-tech equipment. You can use a trusty 20p coin in the UK, and we walk you through how to do that in our full, practical ...

Tire tread helps give your car grip and control, but when tires go bald, you're not stopping, you're probably skidding to the sound of pure regret. Those grooves help channel away water, slush, debris ...