On 30/06/2018 10:36, Tim Streater wrote:

TNP can speak for himself but I've always accepted that it may change
1% or so between inflated and flat. But that difference is not what is
being argued about, as I have said before.


I'm not arguing about anything. I just stated the obvious, that it does
change and why it changes.
I haven't got the computer model that would be needed to work out what
change you would get from a particular tyre/wheel/car/road combination
and at what speeds and what pressures.
It is far from a simple exercise to work it out.