Tire Bontrager Gnarwhal Team Issue 27.5x4.50 TLR StuddableWhen bite and traction are required above all else, this tire keeps you moving. Roll through the roughest terrain and deepest snow with the stud ready, aggressively treaded Gnarwhal. Available to fit both 26 and 27. 5 wheels, this versatile tire can be ridden with or without studs to add traction to even the slipperiest winter riding conditions. A fat bike tire that excels in snow, ice, and slippery terrain Aggressive and siped tread provides traction