I just got back from St George and I ran the BF 37 17's in the UROC comp. They worked great. I was a little worried because I have always ran swampers but I am sold on the BF's now. The guys in ARCA run the Goodyears because they are either given to them or they are almost free. They are real noisy on the highway and don't last. Look for the new rock Krawler BF in Farmington for the first ARCA event. BF has stepped up and are working on a killer tire to crawl w/. I'll be testing them in Farmington.