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Richard[_10_] Richard[_10_] is offline
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Default Does a tyre change its CIRCUMFERENCE when underinflated?

On 23/06/18 17:40, John Rumm wrote:
On 23/06/2018 17:04, The Natural Philosopher wrote:
On 23/06/18 14:28, John Rumm wrote:
On 23/06/2018 06:56, The Natural Philosopher wrote:

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

Answer. not by very much, if at all.

So the short answer to your question is "yes".

This seems to be a perpetual urban myth.

Which you have just agreed with by claiming there is a small change.


No the urban myth says that since there is say a 10% change in what
peooplle think is 'the radius', therefore the RPM will be 10% slower.


Make up your own myths if you like... The 1% seems plausible enough for me.

Can't see that being too difficult in itself - especially as you
probably have input from other sensors and know the steering angle
input Â*Â*and so can assess when you are driving straight and not under
high acceleration etc.


Why would there be monitors on steering angle?


Stability control programs, collision avoidance system, traction control
and various other systems will use it.

Type pressure monitoring will need to be more sensitive to rate of
change than absolute difference since unequal tyre wear would
otherwise be flagged.


Well teh way it aseems to work is that one wheel will overotate with
respect to its diagonalÂ* consisetntly.


Splembib!





But not by very much.


We like that.