In article ,
The Natural Philosopher wrote:
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.

You must be in the sales side of speedometers if you think a 1% change
difficult to detect these days.

--
*They told me I had type-A blood, but it was a Type-O.*

Dave Plowman London SW
To e-mail, change noise into sound.