The SP31 is Dunlop's Passenger All-Season tyre developed for drivers looking to match the Original Equipment needs of their fuel-efficient compact and sub-compact cars. Used as O.E. on Honda Civic Hybrid, Fit and Insight models, the SP31 A/S is designed to help maintain the vehicle's original fuel efficiency and environmental impact while providing all-season traction in dry, wet and wintry conditions, including in occasional light snow.

The SP31 combines traditional energy efficient tyre technologies (efficient tread compound, a narrow width asymmetric tread design, reduced beginning tread depth and optimized internal construction) to maximise vehicle efficiency and driving range.