I have a Warn portable 12v compressor that I have used to fill a totally flat truck tire in a campground. it took a few minutes, but it worked well enough that the truck could be driven to a tire repair shop. It is the SPC model in this link. I always have it with me when camping. I'd turn around if I forgot it.
ROCKCRAWLER.com - Warn Air Compressor Line
I know it would fill one our motorhome tires if it became necessary. Of course it comes with fitting for about anything you might want to inflate.
Of course the other two would work better for more money.
I would much rather fill my own tire and go to tire shop, than wait for roadside service.
Ken
Thor Forums
