There isn't really a general general interest place on this forum for stuff like this.....
http://blog.motorcycle.com/2014/10/01/motorcycle-news/metzeler-unveils-sportec-klassik-tire-intermot/Metzeler introduced a new range of tires intended for "classic" bikes. Unfortunately, the choice of 18" sizes is pretty thin and, of course, no 16's. Wonder how they compare with Bridgestone Battlax BT-45's, which I think are excellent.
Bill