Originally Posted by accumack
I could never use something like that as the compressor low limit is below my required pressure so I would be there for months and never reach the correct pressure. My air has a low limit of about 90-95 psi and I run 105 psi in my tires. It would be a MAJOR P.I.T.A. for me! It may ok for a trailer but not a Motorhome.
My trailer tires are 125 psi and the Viair 450P does a great job airing them up. 12v, so it could be used on a motorhome or trailer.
I didn't get the same fitting as Kenny Kustom with mine, though. Just a clip on fitting. But it sounds like it may not have enough bite with extensions. I also carry a second dual head chuck like Dan mentioned that might work.
Seems like a few ways to skin a cat. If you have on-board air and it'll push air into a tire- there seems to be no need for an external air compressor (or there might- no idea, I don't have it). But the various attachments might be useful.