This month's issue of Roadracing World has a very thorough review of both DOT race tires and DOT street tires. Dresser (i.e., Tomahawk) declined to send tires for review. One thing that was really shocking in the review was the overall difference in weight between the various manufacturers. For example their was a 4lb. difference betwwen a set of Michelin Power Race and a set of Dunlop Race (Michelins were lighter). That's a huge difference in rotational weight.