Pirelli P Zero (PZ4) tires are high-performance summer tires that draw from Pirelli's experience in Formula 1 racing. They have been developed for top-of-the-line vehicles and were initially used as Original Equipment on various luxury and sports car models such as Audi, Lamborghini, and Porsche. These tires are available in both replacement sizes and original equipment fitments. It is important to note that Pirelli's warranty does not cover tires that develop compound cracking in temperatures below 45° Fahrenheit (7° Celsius). Therefore, the P Zero (PZ4) tires, like all summer tires, should not be used, stored, or driven in near-freezing conditions, snow, or on icy surfaces. The tread compound of each Original Equipment P Zero (PZ4) tire is customized to the specific needs of the vehicle manufacturer. It is made of a special silica and carbon black mixture that can be adjusted to provide the desired combination of wet or dry grip, handling, comfort, tread life, and fuel economy. The tread design is asymmetric, meaning that it has a different outer shoulder depending on whether the tire is intended for a sports car or a luxury vehicle. The sports car version focuses on dry handling, grip, and lateral stability, while the luxury vehicle version prioritizes comfort, noise reduction, and resistance to lateral hydroplaning. Non-original equipment P Zero (PZ4) tires have the same design as the sports car version. In addition, all versions have wide, circumferential grooves to efficiently evacuate water and resist hydroplaning. The internal structure of the tire includes twin steel belts reinforced by a hybrid nylon and Kevlar ZeroDegree cap ply. The casing of the tire can be tailored with 2-ply polyester or 1- or 2-ply rayon, symmetric or asymmetric construction, depending on the desired performance characteristics for the specific vehicle application. This customization allows the tire designers to further optimize the tire's performance to match the characteristics of the vehicle. Certain sizes of the P Zero (PZ4) tires are available with Pirelli's Seal Inside technology, which uses an adhesive sealant to repair punctures. This allows the tire to continue operating without losing air pressure. These sizes are clearly indicated in the specifications and search results. Additionally, some sizes of the Pirelli P Zero (PZ4) tires are equipped with Pirelli Noise Cancelling System (PNCS), which reduces cabin noise by applying a layer of sound-absorbing foam to the inner liner of the tire. The availability of this feature is also specified in the specifications and search results. In conclusion, the Pirelli P Zero (PZ4) tires are high-performance summer tires designed for exclusive and top-performing vehicles. Their customizations, such as the tread compound, tread design, internal structure, and optional technologies like Seal Inside and Noise Cancelling System, ensure optimal performance and a comfortable driving experience. However, it is important to note that these tires should not be used in freezing temperatures or on snow and ice.