I bought the pneumatic tires at harbor freight, 4 bucks each, and they do have bearings. Got it all together today. Now it's a tight squeeze into the storage bay. So next mod is either a setup to hold the tote under the trailer, or some sort of clip that can be easily removed so I can slide the tires of. I am leaning towards a rack of some sort underneath to free up the storage area. The tote eats a good bit of real estate in that bay. It is never ending...