I was a bit apprehensive about rolling the dice after so many reviews of the ones that didn't work but I asked a tire shop to fit them on my summer wheels and they all work ! They have been working for about 3 months and have driven 5,000 miles with no problems. Edit: The tire light came on and one wheel wobbled. It turned out that one of them fell apart in the wheel and all the batteries sat. I would avoid her like the plague