I purchased twice. I had 24 that I was putting on our vehicles. First, they lose their color in 2 weeks. Second, And MOST IMPORTANT they corroded and we couldn't get them off. I had to take my Explorer to a tire shop today and have them replace the valve stems. $200 later I now know that this was a big mistake. Thankfully I was able to remove all the others. What a waste of money. I think there should be a class action suit against this company. I'm sure I'm not the only one this has happened to.