A car has several components that work together to make it a fully functional mechanical device. One of the most important components is the tires. The tires are the primary car parts that vehicles move on. Therefore, for a car to move with maximum efficiency, it has to have good tires. Bad tires on the other hand greatly affect the movement of a car, something which may even lead to a mechanical problem within the car's engine. Judging the state of a tire entails knowing the different car tire parts. The part of the tire that is most visible is the tread. This is the part that has the patterns for the grip of the road surface. To maximize of the traction of the car, one is encouraged to always check the tread such that when it starts to get smooth, one should immediately change the tires.