So my tires finally came in Falken ziex 512= 255/50r16 and I decided to go with this tire inflator for the stock spare. It fits quite nicely in the stock location, plugs into the cigarette lighter. I tested it, takes about 4 minutes to fully inflate the spare. It was a little warm (but not hot) to the touch when it was finished AND it comes with a nifty little led light, a decently accurate pressure gauge (compared to my tire pressure checker) and a high quality IMO screw on stem valve- and a carrying bag.