Bayley wrote:
I'm looking at adding a TPMS system to my rig.
I've considered installing one as well. If (when) I do, I'm planning to have a tire shop swap my valve stems over to metal. I've read of some people just adding the monitor to the end of rubber valve stems with no problems. However, last year I was simply check tire pressure on my trailer prior to a trip and as I put on the gauge the stem wiggled a bit then started leaking air. That small bit of movement was just enough to let a crack spread and open. I had to pull the tire and get a new stem installed.
With that experience, I don't want to trust the weight of a TPMS sending unit wobbling on the end of a rubber valve stem. If I'm going to spend the money for a system, I'm going to get metal stems that I can be certain will handle the extra force.
KJ