I've read lots of threads and information on tire pressure. But, there is such a difference I'm still confused. Maybe this forum of elders can help.

The bikes I have use two different size tires: 7:00x23 and 7:00x38. My nominal weight is 190 pounds. I ride on really rough roads and often encounter glass and other sharp things on the road. I currently use max tire label air pressure with no problems but if a lower Safe pressure would bring more comfort I'm all for it.

What should I run in each bike?