The Pilot Sport All Season 4 is Michelin's Ultra High Performance All-Season tire for drivers of high-end sports cars, sporty coupes, performance sedans, Crossovers and SUVs looking to push the limits of all-season performance. Designed to offer high levels of dry and wet traction, combined with confidence in inclement weather, the Pilot Sport All Season 4 aims to control the moment no matter the condition, even in light snow.Featuring an advanced tread compound molded into an innovative asymmetric pattern, the Pilot Sport All Season 4 utilizes large reinforced outboard shoulder blocks that help deliver lateral grip. Dynamic Response Technology evens out the forces exerted on the contact patch during hard cornering, improving handling characteristics and tread wear. Wide circumferential channels combine with large rain grooves to evacuate heavy water from the contact patch, helping increase hydroplaning resistance. Wet traction and stability are further enhanced by the Extreme Silica Compound, along with dynamic biting edges from the distinctive 360 Degree Variable Sipes. These full-depth and interlocking sipes also complement wintertime traction and combine with biting edges molded into the sides of the circumferential grooves to enhance snow performance. The Pilot Sport All Season 4 employs Michelin's Helio Technology, which is derived from sunflower oil. This sustainable and biodegradable material helps the tread maintain its flexibility at lower temperatures, ensuring the Pilot All Season 4's capabilities, even in colder climates.The Pilot Sport All Season 4's internal construction features a two ply polyester casing, blending durability and performance handling characteristics. Two high strength steel belts are reinforced by single nylon cap ply, further promoting comfort and high speed stability.