Originally Posted by
Bat56
Back in the 90s we used to be really concerned about this. Once of the bikes I used to baby back then sat for about ten years. Both tires deflated over that time. After ten years I took the bike out, pumped up the tires, and rode the hell out of it.
My conclusion - it does not matter.
Perhaps it depends on the tires, but I have in my posession tires that were permanently deformed from being deflated too long on an unused bicycle. So it does happen.