The Firestone FS561 is an on-highway, all-position tire specially designed for pickup and delivery truck drivers that navigate demanding conditions. These tough tires are packed with just the right features that resist wear and tear, prevent damage, and extend overall treadlife. The tread cap compound and solid shoulder ribs improve resistance during maneuvering so the tires don™t get damaged prematurely. This is further enhanced by the stress relief sipes to combat irregular wear by absorbing stress on the rib™s edges. Providing resistance to stone drilling are the stone rejectors in the center grooves while the sidewall protector ribs prevent cuts, snags, and abrasions. Helping improve fuel efficiency without sacrificing durability is the state-of-the-art sidewall design which reduces the overall weight of the tires. This means more fuel savings without compromising tire performance.