Ugh…so much misinformation…let me try again to clear it up.
A spare does NOT look like what’s on your car. Saying I can’t fit a 22” spare because it’s too big…yeah, that’s not a spare. No matter what size wheel you have, 19”, 20” or 22”, the spare is the same for all vehicles…it’s a compact spare measuring 19” (T175/80R19). Under the cargo area, in front of the battery, is a molded recess in the floor of the GV80 (remove the plastic cargo box…it’s there). I cannot confirm a spare will fit in the GV80 with three rows, but it very well may. If you want a spare, buy one from Genesis. You’ll need a jack as well as the spare tire kit only comes with a wrench and lug stud.
So…again…you don’t buy a spare in the size that’s currently on the vehicle. It’s not 1970…cars rarely come with full sized spares as there is no room for them. Spares today (for the most part) are compact spares, typically called a “donut”. The donut is the same diameter as the other wheels (all 19”, 20” and 22” wheels are the SAME DIAMETER (circumference)…as the wheel size grows, the tire sidewall shrinks…the overall diameter remains the same.