Compressors have the alure of never having to mess with them again, or so you think.
The guys who've I've wheeled with that have compressors have had to buy compressors that were just as expensive as getting into an ultimate air CO2 set up. You can get CO2 cheaper if you hunt EBAY. The cheap ones usually crap out in less than a year.
As for the cost of filling, I get mine swapped at a welding store. It takes all of the time for them to ring me up. I walk in, pay 17 dollars, and walk out.
Now, obviously, that is a recurring cost.
I generally fill anyone's tires who asks for it after trail runs, but one tank I didn't, just so I could see how many fills I could get. On 33x9.50 tires, I got 45 fills. I did the last 8 or so in my garage, and then ran out, so I had to go to the gas station and fill the other 3 with air.
However, that is 11 trips. So, with helping others from time to time, that is usally about 2 to three times per year I have to get it filled. So 30-50 bucks.
WELL worth the money.
-I can reset my beads
-I can fill 4 of my tires in the time it takes a compressor to fill one (same tire, same starting pressure).
-I can run air tools
An engine driven compressor can do all of that too, you just lose AC.
Baby Beast- Mini Truck in progress