Truck tires are not even plugged anymore. At least not by reputable companies. I am a tractor trailer driver and every flat is broken down on site and patched from the inside.
Yesterday I had to have 2 flats repaired, one on my Edge and one on my wife's Scion Xb. The Xb was 19.99 and the Edge with 18" rims was 29.99
Same size patch and the machine didn't work any harder getting the tire off the rim
And that is how they get you
Happy Thanksgiving everyone