***NOTE***
I'd like to treat this thread as an engineering analysis of CO2 and its uses. If you're a member of the "fill with nitrogen or nothing" church, it might sting a little. Disagreements are easily solved by simply backing up claims with data and/or calculations.

So I'm building myself a "home-built" CO2 system for filling tires, and it's amazing how many myths are floating around out there regarding the pros and cons of filling with CO2 vs. Nitrogen/Air. I thought I would try and do my part in confirming/debunking many of these myths in one spot. My goal is this thread will be linked to as a reference for future questions (in any forum) regarding CO2 and its advantages/disadvantages.

Hopefully, it becomes a useful resource.