A Jiffy Jack and lug wrench (correct size) and
spare tire. You would be AMAZED how many people do not carry a spare tire with
them, or a way to get the flat off, and the spare on. If I have a flat on
the trailer, I'm not calling US Rider. it only takes me about 10 min. to change
the darn thing myself. (Save US rider for more serious stuff....)