I know for the most part I'm preacher to the choir here but this is what happened to my spare tire due to age. I put off replacing it because; 1) It was a spare. 2) It's been covered and did not show any signs of dry rot or cracking. 3) It never touched the road. Went to check the pressure last week and this is what I found. I checked it 3 weeks ago before my last trip and it was fine. Had I needed it last trip I'm sure it would have blown out within a few miles. This one is a Marathon but age is the reason this happened not the brand. I did a google search and found this isn't totally uncommon even with LT tires. Newbies if you're reading this and contemplating replacing that old spare tire to save a few bucks, don't, it's not worth the aggravation or you're safety.
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