I've wanted to change the tire sensors for a long time. In my opinion, the costs involved are too high. I found these and ordered them. I took my car to a local tire shop who fitted them for a low price ($10 per tire), then went to my usual place where my car was serviced for an oil change and they programmed the sensors for me. They have a special tablet for that. It wasn't as easy as just installing it. They have to be programmed. It's great that I no longer see that yellow light on the dashboard!