Exceptional. Outstanding. The best. A touring tire that can do everything. That was the goal of our development team. For 2009 we have completely revised our : HD Ceramic Guard, Triple Nano Compound, LiteSkin side wall. The Marathon Supreme is now even lighter and faster. Puncture resistance has also been improved and its grip on wet roads remains outstanding! Note: Not suitable for use with a sidewall dynamo. HD SpeedGuard and RoadStar compound are 2011 versions.