* Composition: Tires are primarily made of rubber, which is a non-conductive material. Rubber has a high electrical resistance, meaning it does not allow electricity to flow easily through it.

* Purpose: Tires are designed to isolate the vehicle from the ground. This insulation is crucial for safety, preventing electrical currents from traveling between the car and the road, especially during wet conditions.

* Exceptions:

* While the rubber itself is insulating, some tires may have metal components like steel belts or wires embedded within them. These components can offer a path for some electrical conduction, though the overall resistance is still high.

* Tires can also become slightly conductive when wet, as water can act as a conductor.

In conclusion, although not a perfect insulator, tires are primarily designed and function as electrical insulators.