[JimD]

I have two 120V compressors but what I normally use is my Viair 70P 12V compressor. It is quieter and does the job quickly. My compressors are both oil-less and thus pretty noisy. I carry the Viair in the trunk of my 128i as protection against flats and pull it out when a tire needs air. It serves both purposes well and costs about $50. If you get one, be sure to get the accessory outlet that clamps to the terminals of the battery for a few dollars more. The outlets of the bimmer only stay powered for a minute or so after the car is turned off so you have to run the engine to air up the tires if you don't have the clamp on outlet.

I also carry a plugging kit in the bag of the Viair but all the flats I've had in 40 plus years of driving have been slow leaks. With a compressor, I could always have gotten home.