Wow, first time I've seen one blow up sitting on the spare tire rack!
Glad it didnt mess up anything worse than it did.
I've learned over the years that for some reason trailer tires dont last more than 4 or 5 years before they are time bombs. Speaking of the C load rated 14 and 15" tires on most trailers.
If you have 15s, you have options for better tires. If you have 14s, I would reccomend Kumho 857 tires. They are the only D load rated 14" trailer tire available and also the only brand that has not self destructed on me..............knock on wood.