Mike, I have installed many aftermarket TPM Systems onto family members cars and customers cars using the standard rubber valves and external sensors. I have never had a valve failure.
My Suzuki bike has external sensors on the standard rubber valves and they have survived 24 laps of Phillip Island GP Circuit at maximum speed.
I am not saying that a failure cannot happen. What I am saying is that in my opinion, metal valves are not essential although I have them on my NT.
That is for convenience, not durability.
Each time a tyre is replaced the rubber valve should be replaced as well. If that is done there should never be a problem.
Macka
My Suzuki bike has external sensors on the standard rubber valves and they have survived 24 laps of Phillip Island GP Circuit at maximum speed.
I am not saying that a failure cannot happen. What I am saying is that in my opinion, metal valves are not essential although I have them on my NT.
That is for convenience, not durability.
Each time a tyre is replaced the rubber valve should be replaced as well. If that is done there should never be a problem.
Macka