Nice mc gyver job! Helps when you're packing an emergency tow vehicle behind your tow vehicle too!
Yes it's common and easy for about anyone to replace.
Mine lasted 60-70k mi too. Got another 70k on it now with a spare #4 tube behind the back seat.
Other ones have been known to crack but the 4 is the predominant failure. Dealer had a stack of them and already knew which one I needed when I walked in lol.
It's believed the clamp coming loose is what causes the failure. So like the op said check all the tube clamps and make sure they're tight. Plus the new #4 has an updated clamp as seen in the pics.
