An open and aggressive tread design gives the High Roller II excellent soil penetration and mud-clearing ability An open and aggressive tread design gives the High Roller II excellent soil penetration and mud-clearing ability Modified knobs on the shoulder and center improve braking performance and traction on hard surfaces The perfect tire for technical freeride terrain TERRA - 3C Maxx Terra is softer and offers more traction than 3C Maxx Speed, yet provides better treadwear and less rolling resistance than Maxx Grip EXO equipped models feature Maxxis` EXO sidewall protection which helps prevent puncture from sidewall abrasions TR - Tubeless Ready - sealant required