Originally Posted by Raiyn
follow Retro Grouch's advice except for step #7 start AT the valve stem not opposite it. Opposite is for removing the tire
I disagree strongly. The object is to get as much slack in the tire as possible to make it easier to force the last bit of bead onto the rim. To do that, you'd like to force the opposite side of the tire as far into the center of the rim as you can. The thickest part of the innertube is where the valve stem is attached. If you start installing your last bead at the valve stem, you are minimizing the amount of slack you cen generate in the tire.