I’m doing a project for school and need to know why we use studded car wheels instead of normal ones in the snow.
Studded tires have to some extent been superseded by better tire compounds for winter driving – they are not as common as they used to be.
Studs dig in to ice to provide a better grip, which is useful in temperatures around 0C where ice melts under the pressure of the wheel and creates a lubricated slippery interface. They work partly by creating a very high-pressure region under the stud, melting a hole to grip better.
Chains work the same way on ice, and also create an effectively sparse tread pattern which will grip in snow or mud without becoming clogged.