Kumho Ecsta PA31 Performance Radial Tire -235/55R18 100V 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. Advanced design technology and balanced tread compound achieve the ideal blend of all-season traction and high mileage performance. ESCOT Technology improves steering response and increases tread life by optimizing cord tension distribution in the sidewall.