K587 Bear Claw HTR (Hard Terrain Radial) This development of the top selling Bear Claw K299 was designed specifically to meet the demands of the modern day ATV. An 8PR Radial casing structure provides the highest level of puncture resistance and excellent handling. The K587 tread pattern provides high traction on a wide range of terrain with a center knob designed specifically for low vibration and a smoother ride. The tall knobs dig deep into the mud while simultaneously self-cleaning due to the wider spacing between knobs.