Setting tyre pressures

[Bitza]

Hi all, yes a well covered topic but I came across a theory which seems (to me at least) to have some legs. The theory is that because tyre pressures rise as the tyres heat up then the pressure can be set to suit an individuals bike/weight/ridding style etc, by noting the % rise in pressure from cold to typical running temp. So you set the pressures with the tyres cold, then do a typical run for say 20 minutes so the tyres are up to your normal running temp, then stop to measure the pressures, if the pressure has risen by less than 10% for the front and 20% for the rear, then try a reduced cold pressure setting, (and more pressure where increases are over), then repeat the proceedure. The logic is that the lower pressure will allow greater movement of the tyre which in turn generates more heat.
Has anybody else come across the theory, tried it out or is it just a load of b.....s. Bitza