THE BFT IS PERFECT FOR BIKES WITH LONGER TRAVEL. Push the standards of all-mountain freeride tires with the beefed up BFT from CST. The BFT (Big Fat Tire) has it where it counts – meaty center and side knobs to dig in on tight turns and tough climbs. Available with wire or folding bead with EPS (Exceptional Puncture Safety) puncture protection. Exceptional Puncture Safety: Exceptional Puncture Safety offers an added layer of proprietary rubberized poly-fiber material between the tread and the casing. The tight weave of this lightweight, puncture-resistant layer prevents foreign objects from penetrating the casing and damaging the tube.