Just installed them on our 2008 Jeep Grand Cherokee and they work great. The tire shop couldn't install them with their gauge, but after reading the service manual they say they reset if driven over 15 mph for 10 minutes. After only a few kilometers everything was fine. I had to update this product. A pressure sensor never worked properly and the company never repaired it. Now another has stopped working. They are guaranteed for 2 years and I only have them for 4 months. I am not happy!