I was about to say the few I have seen have rubbed the spare but did not seem to be hurting it. I want that kit for my OBS truck just no funds stacks look cool but have there issues also (soot ruined clothes) and having a short bed with goose neck in it plus a tool box just seems like it would get busy quickly. Soo I have been looking for a kit (duals) that will let me keep the spare under the truck. Looks like so far I will get the flo-pro dual muffler, and a little z looking piece of 4" to zig the muffler inward so the existing pass. side pipe can stay were it is. Next hurdle will be the drivers side tail pipe looks like alot of one off fitting .