I bet if everyone here went out right now and very carefully examined every square inch of every tire, at least 10% of us would find a nail or screw we had no idea was there. Ignorance is bliss in this regard.,, Knowledge is unsettling but those fears may not be as rational as suspected. When I drove work trucks for a living on construction sites where we all had pockets full of nails and screws we'd empty at the truck. dropping some more often than not when putting them back in the bins. So, with us and most other work trucks doing that, work trucks and the poor home owners who parked there regularly picked up a nails and screws in the tires more often than average.
If it's not losing air and not a road trip vehicle, knowing there is a nail or screw isn't a 100% must repair immediately call for me these days. We just had a new roof installed by a crew of people dropping nails all over for two days. They cleaned up best they could, and I checked behind them. But, our driveway is gravel and weeds so there is no way of finding ALL of the nails they dropped here and there. Unless I have a tire definitely losing air, I'm going to hold off on any tire shop trips for a couple months and just get them all at once. No doubt we will pick up a few nails in the aftermath of this. If you have any type of construction crew activity places where you drive and park routinely, your chances of picking up nails and screws in the tire get higher. I literally go out of my way to avoid roads where I see work trucks parked. I worked in that world and anyone else who has can testify at how many nails and screws we drop around parked work trucks every single day. Nobody crawls under the truck to retrieve a screw or nail they dropped when trying to get in the truck and back to the shop or home after a long day on the job. The more you know, the scarier place this world is.. like knowing that nail is in your tire rather than driving for years and not losing any air with no idea it was there.