axles and wheels

Am in the final stages of planning. Going to go all out and build a five by ten with a/c etc. My question is I want to use 225-75 x 15
tires mounted on Jeep Cherokee wheels. This way I will not need to carry an extra spare tire. I need a source of supply on an axle, torsion or spring, that will allow me to use my desired tire wheel combo. Ideas anyone? Thank you in advance
tires mounted on Jeep Cherokee wheels. This way I will not need to carry an extra spare tire. I need a source of supply on an axle, torsion or spring, that will allow me to use my desired tire wheel combo. Ideas anyone? Thank you in advance