Greyhound is the cheapest. The best way is UPS. You can get boxes real cheap from U-haul that will fit most wheels, or just put cardboard on the sides. If your work allows you can save a bunch by shipping from a business address and pay the UPS guy. Also you can save money if the UPS guy picks them up from your house instead of taking them to the UPS store. Call your local UPS and ask them how they recommend. A member on the forum shipped me a set of 4 wheels and at first they were gonna charge him way too much. He saved money by buying the boxes from U-haul, and then saved money by scheduling them to pick them up from his house instead of shipping them from the UPS store, sounds dumb I know! lolz Think it cost him about $130 for all four.