For me the Gravelkings were too loose and bead in the middle would never work. The only way I got them to set was to get the tire beads right up against the rim. The tires are very flexible so you can use your hands to pinch the tire and pull to the rim, just rotate the wheel while you do that to every inch of the tire. Then inflate without setting the tire down (setting down will move the bead from the rim on the spot where you set it down). Either that or adding half a dozen layers of rim tape might work.. a couple layers did not help, the LBS tried that and failed.