I put a truck wheel to my hands and then threw the truck wheel on the floor by pressing G, I took food to my hands and started eating it, then pressed cancel action before it was completed
Almost after a 24 hours passed, the wheel was still at the place I threw it.
So I'm guessing thrown items are not affected from persistence wipes. Because technically it should have been deleted in 30 minutes? Or I don't know, 4 hours? I'm pretty sure it shouldn't have stood there for 24 hours.
I tried it with an amphibia S just now, I'll see what rolls out from that.
I made the report private, so that people won't abuse this and maybe cause possible server crashes or something, due items stacking up or something.