[RKDinOKC]

Gotta plug those in. Not too convenient for the autocross. Too many times the air is not on out there.

I used a Craftsman rechargeable for years until the battery finally went kaput. Got another Craftsman and the battery didn't last adding 3 psi to one tire. Took it back.

Had about decided I was going to have to get one of those little A/C compressors like you suggested until I did some internet research. Found the current Sears one's battery sucked and the Slime's reviews sounded like my old craftsman.

My 928 has a deflated spare and a 12V compressor to pump it up with. The Porsche compressor works well, but has that cigarette lighter cord. Not very convenient when you have used a cordless.

If the slime one turns out to be fubar will probably get the cheap Sear A/C compressor.

Honestly, I will mostly be using it to top off the tires after an autocross so the portability thing is real big for me. The tires gain a LOT of pressure autocrossing so I have to bleed them down to keep full tread contact. Since the tires don't heat up nearly as much on the street I need to put a couple of PSI back in them to keep from running them to low.