Its mostly in Illinois, Indiana, and Michigan. I fly my own flag (run under my own authority) and my business partner responded to a craigslist ad in Gr mi to run retread tires from a retread plant in Wyoming Mi to Gaylord, Detroit, Kalamazoo and Flint Michigan and Gary Indiana and Chicago. Since I stay in Kentwood Michigan I get to come home more on a regular basis.
Anyways my truck is a Freight liner m2 rhl185 and I own a 35 foot flatbed trailer and 30 enclosed auto transport trailer. This retread plant does not care as long as you can get it on some form of a trailer or big truck they will ship it.