The maxxis high roller ii tyre has modified knobs on the shoulder and centre to improve braking performance and traction on hard surfaces the tyre has a square profile which provides a solid consistent feel across the knobs and it has an open and aggressive tread design for excellent mud clearance some variations of the tyre are available with a 3c maxx terra compound which offers brilliant traction better tread wear and lower rolling resistance these mountain bike tyres give you all the gr