More than a pound lighter than its predecessor, for improved suspension response and maneuverability. Rigid sidewalls reduce tire movement on the rim, even at very low pressure. Redesigned Trial X Competition casing is more flexible, for a larger contact patch and improved traction. Recommended pressures for trials use: 5 PSI (rear). Maximized contact patch casing enhances grip on loose dirt and in corners. Note: NOT legal for highway use. Michelin MCP Maximized Contact Patch - With a new competition carcass with more plies, the tire is more rigid and the contact area is increased. Increases bike stability at the front, which aids late braking and quick turn in. Tire Specifications: Load / speed index: 68M. Construction: Tubeless radial.