Originally Posted by
terrymorse
If minimal rolling resistance is the goal, there's no need to get a fully slick tire.
Continental makes the
Speed King RaceSport, which has an amazingly low rolling resistance that rivals the GP 5000. The appropriate size is 27.5 x 2.20.
bicyclerollingresistance.com found the Speed King RaceSport has the lowest rolling resistance of any MTB tire.
Can't seem to find these ones for sale online...