The Extensa HP tire provides high traction for all seasons as well as a smooth ride and dynamic styling. It features a unidirectional tread design for maximum grip . improved handling . and better fuel efficiency. A multi-wave siping pattern reduces uneven wear and improves grip on wet surfaces and light snow. The optimized tread design reduces noise while the continuous center rib improves stability . comfort . and steering. Tough tread compound delivers a long tire life backed up with a 45 .000-mile warranty.