The high roller ii 275 2ply wire mtb tyre from maxxis is a mtb tyre with an open and aggressive tread design that gives the high roller ii an excellent soil penetration and mud clearing ability the square profile provides a solid consistent feel across the knobs the modified knobs on the shoulder and centre improve braking performance and traction on hard surfaces when gravity pulls you downhill rely on the high roller ii to keep you upright available in black 24 only