Rubber / Tire
The rubber Material that comes with the Automotive Material Pack can be used for any general rubber surface you might find in a car. For example, the following surfaces would make good use of the rubber Material.
When looking at the rubber Material Instance you will notice that it has a tire-specific option called Use Sidewall. Enabling this option will add a new Normal Map Texture that is used to display the text that can be found on the tire sidewalls. Failing to properly line up the UV of the tire sidewall to the Normal map of the tire will result in the tire lettering and logos not show up correctly on the tire sidewall like in the image below.