While in my nearly 50 years of driving I thought that I had experienced most every type of tire blowout imaginable at one time or another, I guess I missed one. Recently as I was rolling down the interstate (listening to some of my favorite jazz tunes ) I heard a loud pop from the rear of my car. My initial thought was of course was I had blown a rear tire, but realized quickly that it wasn't the case as it wasn't followed by the rear end "wobble" and "thump thump". I thought it best to pull over and check it out. Since both rear tires were fine as expected, I opened up the trunk and sure enough ... my temporary spare decided to have a spontaneous blowout A quick google search when I got home revealed that this particular Firestone temp tire (T185/R60/17) was prone to this activity for no particular reason other than age (no recall or compensation available). Sure glad it happened in the trunk and not at the moment of need. Unfortunately, the replacement was also an adventure as no one has them used (gee I wonder why ), and only one tire manufacturer still makes the size (Maxxis). $159.00 later plus shipping ($15) and mounting ($15) I'm back in business . Anyone else had a trunk blowout ?????