Not looked at this, but seeing as an over inflated tyre is not as grippy as
the designed inflation and also given that hot air adds pressure I have also
often wondered about the detection. Of course a couple of ideas do come to
mind. Monitor the tyres and compare them. If one is not behaving like the
rest then something is definitely not right.
The other thought is that if the car is still and one tyre is changing, say
over night, then you got a leak in that tyre. Its not so much a pressure
sensor issue, but a comparison one.
Brian

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https://www.youtube.com/watch?v=_2l5bOhHNxU

Answer. not by very much, if at all.

This seems to be a perpetual urban myth.

It tyre pressure sensors are using this, it has to be a very very
complicated bit of software to detect - say - less than 1% change in RPM
relative to the other wheels.


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