Petrarch wrote:
more compatible with lower pressure resulting in higher probability of sealing certain punctures. Is that fair? In your opinion, what would be the ideal psi (least rolling resistance, best chance to seal on puncture, etc.) on these 23s for a rider of 150lbs?
Just my experience, but I don't think there's that much higher complete sealant failure from *starting* with a higher pressure. Even starting that high, I've usually sealed by around 25-60PSI. It just means you tend to fall much lower from the starting point before you finally seal. Because it takes longer to bleed that pressure before finally sealing, there is some risk of blowing all your sealant out before you get to a seal-able pressure. But (in my experience), it'll still eventually finally seal.
The cases where it gets down to the <40 PSI level is when I like to pull over, jam a plug in, and inject some more CO2. Which is still *much* better than going to zero, and having to put a tube in.
Eyeball, I'd put about 95 PSI in for 23s/150lb rider.