Ultra High Performance All-Season run-flat tires have a unique feature that allows them to continue functioning for up to 50 miles at speeds of up to 50 mph, even after losing air pressure due to a puncture. These tires are specifically designed for drivers who prioritize both performance and safety. They offer a combination of excellent handling, a stylish appearance, and durability, with a rating of Z-speed or higher. They are also suitable for all-season use, including light snow conditions. Many sports cars, performance coupes, and high-performance sedans come equipped with Ultra High Performance All-Season run-flat tires as Original Equipment (O.E.). When purchasing O.E. Ultra High Performance All-Season run-flat tires, they are often intended as direct replacements for worn-out pairs or sets of the vehicle's original tires. Alternatively, they can be used for other vehicles if they are available in the appropriate size, load range, and speed rating to match the performance category and specifications of the existing O.E. run-flat tires. The Hankook Ventus S1 noble2 HRS tires are available in limited sizes and come with Hankook's SEALGUARD technology. This technology features a tacky substance that is applied to the inside of the tire, from shoulder to shoulder. Its purpose is to temporarily seal punctures, reducing the need for immediate tire changes. SEALGUARD tires can effectively seal punctures up to 5mm in size. You can identify the sizes that come with this technology on the Specs page and in the search results. Please note that run-flat tires are only recommended for vehicles that originally come equipped with self-supporting run-flat tires and possess a tire pressure monitoring system. If your vehicle does not meet these conditions, it is not advisable to use run-flat tires. Instead, you may consider MOExtended or MOE tires. While these tires do not have the same endurance as conventional run-flat tires, they offer limited temporary extended mobility after a puncture causes complete air pressure loss. However, they should not be used as substitutes in situations where conventional run-flat tires are required. To ensure the right tire for your vehicle, consult our Original Equipment tire listing or refer to your vehicle owner's manual. Related Information: Learn more about MOExtended/MOE tires here.