The Michelin X Line Energy D+ Tire is an ultra-low rolling resistance dual-drive line-haul tire that features a tread compound designed for fuel efficiency. The tire meets SmartWay requirements and is greenhouse-gas two regulation and CARB compliant. The Infini-Coil technology wraps 1/8 mile of steel cable around the casing to eliminate casing growth and ensures a consistent footprint and even wear. The casing is designed with high-tensile-strength steel belts capable of supporting multiple retreads. The X Line Energy D+ incorporates interlocking, edge-biting tread sipes and regenerative tread grooves designed to provide grip and traction throughout the life of the tire.