In all honesty a grind works much better, much sharper bite, and better hold, with out your pads sticking to the rims like they can do with tar. You will need to pads designed for a grind though, i would recommend Rock Pad Blues or Coustsinks. But you dont need it, Zoo pads work well, but the rim need to be dry and clean for them to work really well, so not great for winter riding.