i'm looking at a lighter alternative to my current c16's (2.2) & highrollers (2.35). i ride whistler & northshore and am perfectly happy with the performance of the above tires; just want to check out lighter alternatives. Single ply tires are too thin, but the roller rs seems to strike a happy medium - burly sidewall with a lighter bead, and the tread pattern looks decent. anybody tried these, or know what they actually weigh (the spec. site doesn't list weight)?