Everyone will need new tyres at some point, but understanding the sizes can be difficult - and BORING. So we've made it easy and fun, with the help of journalist and tarmac rally ace Samantha Stevens and drift racer Jake "DriftSquid" Jones.

Put simply, tyre sizes are written on the tyre side wall, or on your car's tyre placard and handbook. Tyres are measured like this: the width across the tread is in millimeters, the sidewall number (known as the profile or series) is a percentage of the width, and the wheel size is measured in inches. Those are the three numbers you need to know -- and need to pronounce like Sammy does in the video - to sound like you know what you're talking about in a tyre shop. And yet, Yokohama has a colour system which makes choosing the right tyre tyre is so much easier than figuring out the size - go to http://www.yokohama.com.au and see for yourself!