Auto tires are an essential part of any vehicle, and there are several components that make up a tire. TREAD is the part of the tire that comes into contact with the road and provides traction. AIR is necessary to inflate the tire and keep it at the correct pressure. SPARE tires are kept in the trunk of a car in case of a flat tire. RADIAL tires are constructed with the cords running perpendicular to the direction of travel, providing better handling and stability. RIMS are the metal rings that hold the tire onto the wheel. All of these components are necessary for a safe and reliable auto tire.