odd flat tire issue

[2kblackgtp]

Yesterday morning I got off work and stopped at the supermarket. When walking out I noticed my back passenger tire was almost sitting on the rim. So I break out my cigarette lighter tire inflater and fill the tire from about 5 psi to 37 figuring ill be bleeding some pressure from what I assume is a slow leak, although I didn't hear air hissing or anything. I didn't notice if the tire was low leaving work or the night before since the driver side was facing me and I just hopped in the truck.

I get home, check tire pressure, still at 37 so I lowered to 33. I went out before work last night, still 33. Checked it this morning thinking maybe it had something to do with temperature drop overnight, still 33. So I think its safe to say I don't have a leak.

So aside from someone deflating one of my tires, why else would just one tire go flat only once?

[sweetbmxrider]

I'm going with malicious activity.

[Blackbirdws6]

I'm going with malicious activity.

Likely this. Speaking from my experience, when the temperature dropped rather suddenly on my old beater, I got a leak in one of the tires. Turned out the valve stem got a small crack in it due to the rapid temp change. If I kept it well inflated, the stem didn't leak much but once it dropped to a certain point, it leaked rather quickly.

[zraffz]

Dry rotted tires do this too. If the tire is cracked and you park a certain way it will leak out quiet quickly.