New tires for my trailblazer the others were die roughed These Cooper Tires Starfire SF-510 tires offer premium performance for your SUV at a value-tire cost. A modern highway design and circumferential grooves help to disperse water and slush from the tread to provide dependable traction, and a variable pitch tread provides for quiet-running tires at highway speeds. Starfire SF-510 tires provide a smooth ride and a comfortable on-center feel. These tires have the size coverage for today's most popular vehicles