Federal Formoza AZ01 All-Season Radial Tire - 185/55R16 83V Tire Only Outside Tread - Pattern with well-balanced rigidity makes pressure on contact patch spread equally, providing excellent dry surface handling Inside Tread - Curved groove walls are designed to aide shoulder water-directing grooves in water evacuation, providing stability and safety on wet roads at high speeds Central part of pattern is designed to increase resistance to hydroplaning Brand new noise-reduction design- 5 differently formed blocks are placed in optimized disorder fashion to reach lowest noise level