Bobby, this one is for you...
I was at my local dealer's Quick Lane, which is also a tire shop, this morning for an oil change.
While I was waiting a gentlemen pulled in with a low front tire on the drivers side. He told the service writer the tire had a nail in it and was slowly losing air pressure. After being checked in a "tech" took the vehicle in to the shop to check it. About five minutes later he pulled the car back out of the shop and said it was fixed he'd aired the tire back up to 36PSI.
When the owner inquired about the nail the "tech" replied he didn't see a nail. The owner got in his car, turned the steering wheel hard left, and pulled forward slowly while a couple of us waiting on our cars looked for the nail. Sure enough he had a roofing nail dead center in the thread. The "tech" said that he didn't see it...it had a head the size of a dime!
Now it get really good.
The tech goes back in the shop and gets a pair of pliers and pulls the nail out. The tire went flat almost instantly. Now keep in mind the car has been pulled out of the shop and is in the parking lot. Now our "tech" goes back in and gets a drill and reams out the puncture. I think it was at least a 3/8 inch bit on the drill.
Next he goes back in the shop for a puncture repair kit and uses three "worms" to plug the hole he drilled. He then sprayed soapy water on a totally flat tire to check for leaks. Not too surprisingly it didn't bubble.
Now he goes back in the shop and grabs an air hose...that is about ten feet to short to reach out in to the parking lot. After a few minutes of looking around he finally found another hose to extend it out in to the parking lot.
After airing up the tire he goes back in the shop for a pair of side cutter to trim off the excess "worm". Since there are three "worms" to trim he can't get them all in one cut. I watched him twist and pull against the 'worms" while slowing hacking away at them. They must use good adhesive as none of them came out even after his best efforts. I'd guesstimate the nubs he left protruded out at least a 1/4 inch from the thread. It will take awhile for those to wear down I suspect. The "tech" then aired the tire up to 36PSI and said it was fixed.
The manager who had been watching this charade finally came out and told the car owner there was No Charge for the repair. He then helped the "tech" pick up all the "stuff" he had brought out in to the parking lot and carry it back in to the shop.
I didn't know I was going to get free entertainment while waiting on my Expedition.