Aggressive tread design offer excellent penetration and improved mud clearing while maintaining a consistent feel from straights to the corners Aggressive tread design offer excellent penetration and improved mud clearing while maintaining a consistent feel from straights to the corners TR - Tubeless Ready - sealant required EXO equipped models feature Maxxis` EXO sidewall protection which helps prevent puncture from sidewall abrasions 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 WT - Wide Track casing optimized for rims over 35mm internal width