Our continued tire development evolution raises the bar for rock crawling and challenging terrains by delivering our most advanced tread to date. Deep .65 - 1.0 inch inter-locking tread blocks and optimal void excels on the trails while the wider spaced, staggered tread blocks grip in the loose terrain. RC500S, the S or sticky compound features a combination of our proprietary soft tread compound and flexible 8-ply rated carcass which results in one of the best rock crawling tires on the market. The soft compound and carcass flotation set a new standard in slick surface traction. The new carcass maximizes ride quality and the trackability is unmatched on loose or hard pack terrains. The super deep rim guard protects wheel lips and helps avoid pinch flats at lower psi.