All-Season Passenger Car Touring tire. SN250A A/S are Original Equipment on Select Vehicles. Dynamic Range Technology Angled tread grooves on every tread rib Solid center rib 3D Canyon Sipe technology Symmetrical rib design High sipe density Four circumferential grooves 75,000 Mile Limited Treadwear Warranty on H/V rated sizes (except OE sizes) 80,000 Mile Limited Treadwear Warranty on T rated sizes (except OE sizes) Road Hazard Protection Warranty Ensures maximum grip over a wider range of temperatures Add void for packed snow Minimize the effects of road wander caused by surface defects Increases edges for enhanced ice braking and all-weather handling Created to optimize wear For enhanced all season drivability Evacuate water and enhance hydroplane resistance