This is about how you know your car.

I am completing my know car booklet (unit Standard 15408).
One thing that i have learnt about my car is how to look after your car and your tyres. Did you know it is illegal to drive a vehicle which has a tyre or tyres with a tread depth of less than 1.5 mm deep right around the circumference of the tyre over the entire width of the tread pattern.