The bubble/shrink will work, but it will collect a LOT of dust & dirt on the trip. Try a shop that sells custom wheels, they may have some old boxes out back. Otherwise a trip to your local pack 'n ship store is in order. They should have an appropriate sized box, but that's 'bout $8 each.
You might also look at a furniture or bedding store & cut/bend oversized boxes to fit. Worked well when I was shipping a plotter.
