The Dunlop SP31 A/S is a Passenger All-Season tire designed for drivers that are looking to match the original equipment (O.E.) needs of their fuel efficient compact cars and sub-compact cars. They are often used as O.E. tires on the Honda Civic Hybrid Fit and Insight models along with being designed to maintain the vehicle s original fuel efficiency and environmental impact while providing all-season traction in dry wet and wintry conditions. The SP31 A/S combines traditional energy efficient tire technologies (efficient tread compound narrow width asymmetric tread design reduce beginning tread depth and optimized internal construction) to maximize vehicle efficiency and driving range.