I am curious about what size spare Expedition owners who have factory 20" rims have under their Expeditions? My wife has a 2019 Expedition with stock 18's and I have a 2017 F150 Lariat with stock 20's. I am in the process of upgrading my wheel/tire package on my F150 and was going to throw my stock wheels on my wife's Expedition. I just need to figure out what to do for a spare on her's as I don't want to invest in an additional wheel for the F150 to just sit under the truck to get trash all over it.