Hutchinson Griffus: Hutchinson is claimed to be the inventor of the pneumatic cycling tire. The Griffus is their enduro racing tire and it has done well in EWS competition. Available for 27.5” and 29” wheels in 2.4” and 2.5” widths, with the 2.5” option receiving a taller, more aggressive tread pattern. Hutchinson suggests running the 2.5” version up front, and the 2.4” in the back.