"Andy Burns" wrote in message
...
Jeff wrote:

"T i m" wrote:
But the two are interlinked?

Can't be by much given that you'd expect the axle to road distance to
have
dropped by more than 0.4%, although he didn't actually measure that.

I can drop the pressure back to 31 and measure the drop of the axle,

Yes please.

certainly it was visibly more than 0.4%, of course I won't be inside the
car adding weight while I measure it ...

Sounds like a relatively heavy vehicle given the 39 psi tyre pressure so
that
may not matter much.