On my way home from Lake George on Sunday, at 70 mph, I had a total blow out on the trailer. First time for me, I've been really lucky so far given how much and far I trailer annualy. Thank God for spares! Culprit was an underinflated tire. Got too hot ant blew. I was 15 lbs low on the one that wasn't blown. ALSO check the pressure on your spare, that was 20lbs low! I limped the last exit to my father in law's to put air in. I couldn't change the tire since my iron didn't fit, be sure you check that too! LOL My wife had to run and get me a jack and tire iron, I changed it, then limped to my dad in law's like I said. Made for a fun few seconds when she blew though. You should have SEEN the smoke and rubber billowing out! Man, I thought I had done some serious damage. Now I'm off to go find a matching tire for a new spare.