I've got very old (10+ years) Author Mystic bike. It has 26" x 1,95" tires with suggested pressure set to 2,9-4,5 bar. Currently I have inflated them to 3,4 bar. I'm around 120 kgs and riding on such tires brings no problems for me.
I'd like to start riding with my older daughter in bicycle child seat. She is less than 20 kgs (near border weight for that child seat).
Answers to this Duru Can Celasun's question assured me, that in general my bike should handle our together weight of 140-150 kg without serious problems. Though, we may already talk about overloaded bike with such weight of user.
Here, I'd like to ask, what would be perfect tire pressure for both my lonely rides (120-125 kg) and for together trips (140-150 kg)?