Pirelli rubbers both front and rear. Up front we used the Scorpion Pro F.I.M. and a MT-43 trials tire on the back. The trials rear paired with any front tire offers crazy amounts of traction and grip over rocks, as well as what feels like the plushest initial impact. The Scorpion Pro F.I.M. had a bit to stiff of a carcass for the rocks that we were smashing into and we’d have liked a tad more feel, but nonetheless, the stiffer sidewall didn’t allow any pinch flats for 600 miles of rocky trail.