The PBX A/T Hardcore Scale 1.9's are miniaturized versions of Pit Bull's new 1:1 All Terrains which are dominating the market! A design that has traction like a Mud Terrain, but handles on road like an All Season. Winter Performance rated. Six Ribs, 5 water channels...and tons of siping. A seriously innovative tire now available in 1.9 RC.