How do these valve cap sensors work? Please tell me it’s not by deliberately ‘bypassing’ the actual valve to read the pressure in the tube /tyre and acting as valve and valve cap rolled into one themselves. If it is then you’re overriding a simple, time served, reliable and critical piece of safety equipment and handing the job to an unknown gadget of unknown provenance, whose only mass market testing is via Amazon star ratings and that may or may not break without warning. And you’re doing this in the expectation of greater safety? Or have I got this wrong?
My only experience of tpm systems have been the factory fit internal ones fitted to my wife’s last few (BMWGroup) cars and they have been the only things to go wrong while we’ve had those cars. On the last car we put in a warranty claim because of the tpms continuously giving us false readings and the current one still gives intermittent false readings. Not a system I have great confidence in but at least if it goes wrong it’s only an annoyance. And that’s factory fit. Excuse me if I pass on unknown Chinese valve caps where only the sticker changes between brands.
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