The advantage of XR6's method is it doesn't requireGood point, Yes, make sure you use the same gauge ALL the time
an accurate tire gauge, only a consistent one.
The rear is more difficult, to the point that I quit using the 4 lb rule. I think it's cuz it's bias, and bias seem to run warmer. I was getting about a 6-8lb increase, even after hiking the cold pressure to 450lbs. All this resulted in is ruining the rear sensor due to pressures rising well into the mid 50 range. JMO.