tires 22"

Howdy, Am enjoying the new ride but lack of spare is concerning. Anyone have experience on what all is needed to be all set? I searched some threads and figured ezspare was recommended. But for my model they show a 20" alloy spare tire and wheel at $420. How would that work, given mine has 22"...

22" RUFF RACING wheels with 255/35/22 tires. Lots of tread left. Came with 2015 Genesis sedan which I just bought. Look nice, but I want factory ride Part #. Please Size Width BP1 BP2 Off CB 954MP5F45K73 22 10 5x114.3 45 73.1 Black/Machined...