ECSTA PS31 Designed, engineered and produced specifically for today’s growing number of mid-level sports sedans and coupes, the Ecsta PA31 delivers outstanding street performance and excellent mileage. SPECIAL FEATURES Heavy sipe density and large cross grooves expel water quickly, improving snow and wet weather handling. The directional tread design is shaped to avoid uneven wear and delivers excellent steering, cornering and braking in all-season conditions. The variable pitch shoulder blocks reduce road noise throughout the life of the tire.