When I first got my trailer (since moved on to a Class C) I had new tires put on to replace the China bombs that came from the factory. At that time I had metal stems installed. This served two purposes. First, it made the stem very rigid thereby reducing the likelihood of a failure due to a rubber stem failing. Second, with my TPMS (from TST
), I can measure both pressure and temperature, so the metal stem transmits rim temperature to the TPMS device much better than a rubber stem would.
I use the same TPMS on my current Class C, but that MH came from the factory with better tires and metal stems.