The Accelera Eco Plush Highway tire is a reliable tire that will give you a comfortable ride and that peace of mind that comes with making a choice that's good for our planet. Three main ribs go around the tire to decrease road noise, and add to the tire's grip on the road. Four circumferential grooves allow water evacuation: preventing hydroplaning, and increasing wet traction. A center rib down the front of the tire improves braking, and helps with traction during acceleration. The Eco Plush Highway tire is nicknamed "The Eco-friendly Tire" by its creators, and offers a safe, comfortable, and quiet ride without sacrificing its "Eco-friendliness."