The Accelera PHI is an all-season performance tire that offers excellent handling and flexibility on different road surfaces. Some key features include a dynamic medium lateral groove and a straight, medium rib. Additionally, the PHI is covered by Accelera’s mileage warranty. Whether you’re a driver that’s learning to race, or looking for a reliable everyday tire, the PHI is an excellent choice because of it’s versatility, 400 treadwear rating, and grip and cornering abilities.