Once I air down, I usually stay there until/unless there is a significant stretch of freeway. For the typical 50 - 100 mile ride home - I stay at the lower pressure. Of course, I'm on a big bike (GS), so I don't go that low to begin with (18/20psi).
Originally Posted by SWbySWesty
Also worth noting, there is anecdotal evidence supporting the theory that the ultra-heavy duty tubes (the 4mm thick variety) don't like low pressures at high speeds. A couple of the local guys have experienced catastrophic failures at highway speeds (55mph) with these tubes when they failed to air up for the ride home. It might have just been a coincidence - or or it might not have been - but probably worth keeping in mind.
"Life is meant to be enjoyed, not endured" ~someone