My spare for my blazer has to be flat to store inside, consequentially I need either an air tank or a little compressor. I'm leaning toward a tank- cheaper and can run Nitrogen instead of compressed air. I saw a clean little set-up out at Johnson Valley but jelled and forgot the name of MFG. Any help would be greatly appreciated thanks.

Bret

Why Nitrogen , you get many more cubic feet out of Co2

My understanding is that the only reason to use nitrogen over compressed air is that it is cleaner. Unless you are doing something that needs it to be cleaner (paintball gun for instance) than you probably want to use something with more volume like CO2. The good thing about that is that it allows you to operate at a lower pressure (safer) because CO2 expands as it is released, and thats where you get all the volume. Check out this page: http://www.powertank.com/