1976 peugeot 10-speed bike correct tire pressure? I have a 1976 peugeot 10-speed bike. What is the correct tire pressure? I ride over concrete sidewalks and rough, pitted asphalt roads and paths.
First, and especially with a tire that old, check it for wear.  If it's cracked and dry-rotted, replace it.  If there are visible rips in the sidewall, also replace it.  If neither of those are the case, look at the sidewall of the tire.  Most tires should have a PSI recommendation molded in the rubber of the sidewall somewhere.