[jps4jeep]

I would either get a better air compressor or a dedicated CO2 system. I have seen people use a old beverage tank or gas cylinder. those propane tanks simply wil not store the amount of air you will need at the pressure you desire. ideally you will need at least one tank per tire. think of it this way, you have a 5 gallon air compressor tank, let it come up to pressure, turn the compressor off, then try to air up a tire, your not going to get very far, once the pressures equilize, your pretty much done.