Almost all chassis with 22.5" tires and wheels , don't come with a spare .
Tire weight, jacks and lug nut torque requirements , make changing a flat an operation few owners are willing to tackle.
450 ft/lbs is the torque required, on my XC.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.