Engineered for SmartWay verified fuel efficiency, long tread life and durability in regional and emerging super regional applications.15% reduction in rolling resistance compared to MICHELIN XZE 2 tire. Benefit is delivered with new Energy Casing technology that provides a cool running sidewall and bead for low rolling resistance.No compromise fuel efficiency and mileage is delivered using Michelin’s Dual Compound Tread technology, featuring a top wear layer of tread over a fuel and durability bottom layer.Excellent mileage comes from the Dual Compound Tread and the tread sculpture design. This combination provides outstanding mileage in regional applications, as well as in emerging super regional applications that combine highway and regional driving.Casing life is extended with curb guards to protect the sidewalls from impacts and abrasions, groove bottom protectors to help prevent stone-drilling, and a full width elastic protector ply to protect the casing.