In article ,
Andy Burns wrote:
Tim Streater wrote:

One revolution of the wheel has to equal one passage of the tire's
circumference along the road (since the tire does not slip around the
rim and assuming no slip on the road). How could it be otherwise?

Talk of "effective radius" is not relevant.

So are saying the circumference remains constant, hence the rpm remains
constant, hence iTPMS cannot work?

If you were to measure the speed of rotation of the wheel at any single
point on it, that would vary depending on where it was to the road contact
point. Virtually no drive mechanism transmits a perfectly uniform speed
from input to output. There is invariably a degree of 'chatter'.

--
*ONE NICE THING ABOUT EGOTISTS: THEY DON'T TALK ABOUT OTHER PEOPLE.

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