ALWAYS replace your RUBBER valve stems with METAL valve stems
This review would be a five if the instructions added this step:
I have a small travel trailer with newish tires and started using the TPM's last year. We drove a few thousand miles. In storage for about 6 months, then in October took our first trip. Within 100 miles the monitor in the truck started squeeling. Was able to get off the road before the air was out of the tire. The system worked beautifully. The problem was a valve stem that cracked where it meets the tire. Put on the spare and drove about another hundred miles - the second one failed. Took the tires in and was told that the weight of the TPM spinning around caused the crack. Please do yourself a favor, use this great system AFTER you replace with metal valve stems. They are cheap to buy and cheap to exchange with the rubber ones.


