To be clear. I will NEVER rely on this product. I've been in the garage with this kit for about an hour now. I was planning to replace all 4 valve stems on my car as they are leaking and the tires need air all the time. I could only pull the valve stem out of one tire. The problem is that I'm not around to reinstall the new valve stem. I screwed up a new one that was stuck sideways in the tank even though I added some PB blaster to it before launch. The handle of the tool that has to press the new valve is also broken. Save yourself the headache and just pay someone to do the work. If you think it would be good to leave it in your car in case you get stuck on the side of the road, just call a tow truck. There's no reason to end up in a much worse situation along the way. I am now in a position to decide whether to take the tire off the car and take it to the local shop (not tonight as everything is closed Friday night) or try to break the bead and install the valve stem from the back of the tire itself (which neither requires this kit).
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