it uses 2
1 narrowband, and 1 wideband
pumice, you should get 2 or 3 seasons out of the es100’s.
as far as grip. grassroots tested them, and i think they were like 1.5 sec slower than the azenis on dry pavement. i would have to go back and find the artical though… i could be off.
anywho, based on their tests and reviews it seems to be the best all around tire for your dollar.