Thinking ahead to the inevitable--getting a flat while traveling or even local driving. I run 265/70/18 with a 3" lift; should i even attempt to install the factory spare and drive to shop to have a tire repaired? Even at low speeds/short distances? What kind of lopsideness would I experience? Surely, someone has a success/horror story, if not an urban legend (this guy at Moab told me about this guy who...).