My tire is rated at 125 psi, and that is the pressure I used to pump to before each precal. I wanted to keep rolling resistance minimized to compensate for age.
On one hot day I had a blowout on the rear tire in mid-measurement. The bead popped out of the rim, and the tube gave a nice loud bang.
Since than I have pumped to only 100 psi before precal, and have not had another blowout.