Pirelli P Zero (PZ4) tires are high-performance summer tires developed using Pirelli's expertise in Formula 1 racing. These tires are designed for luxury and sports vehicles, with specific sizes available for both replacement and original equipment fitments. It is important to note that Pirelli's warranty does not cover tires that develop compound cracking when used in temperatures below 45° Fahrenheit (7° Celsius), so they should not be used in near-freezing temperatures, snow, or ice. The P Zero (PZ4) tires are tailored to each vehicle application, with a special tread compound that can be adjusted to meet the needs of the vehicle manufacturer. The compound is made up of silica and carbon black, which can deliver the desired combination of grip, handling, comfort, tread life, and fuel economy. The tread design varies based on whether the tire is intended for use on a sports car or a luxury vehicle. Sports car tires focus on dry handling and grip, while luxury vehicle tires prioritize comfort, noise reduction, and hydroplaning resistance. The internal structure of the P Zero (PZ4) tires includes twin steel belts reinforced by a hybrid nylon and Kevlar ZeroDegree cap ply. The tire casing is customized based on the desired performance characteristics of the original equipment application, with options for different ply materials and construction types. This customization allows the tire to be fine-tuned to match the personality of the vehicle it is designed for. Some sizes of the P Zero (PZ4) tires come with additional features. Pirelli's Seal Inside technology is available in limited sizes, providing an adhesive sealant that can repair punctures and prevent air pressure loss. Additionally, the Pirelli Noise Cancelling System (PNCS) is available in select sizes, which involves a layer of sound-absorbing foam being applied to the inner liner of the tire to reduce cabin noise. In summary, Pirelli P Zero (PZ4) tires are high-performance summer tires designed for luxury and sports vehicles. They are customized for each vehicle application, with specific tread compounds and designs to optimize performance. Some sizes also come with additional technologies such as puncture sealing or noise reduction. However, it's important to follow Pirelli's guidelines and not use these tires in freezing temperatures or on snowy or icy surfaces.