Blow outs:
Well, IMHO, if it is indeed a blowout, you will know it. I have had a few over the years and in every case it is a sudden thing accompanied with a shotgun in the ear sound, as previously mentioned.
If a tire went flat and you didn't notice, almost guaranteed it wasn't a blowout.
I had one in 2003 that I never felt or noticed. Couldn't have been a blowout but rather a leak until it went flat and then proceeded to come apart and create all kinds of havoc.
In my case I totaled my Prowler TT after spending upteen dollars fixing it up nicely. Yep, wrote it off on its maiden voyage...:(
Had one a couple years ago coming from Alberta to the BC coast. Coming down the BC Coquiahalla highway near Merritt and all of a sudden BOOM!, like someone fired off a shotgun in my ear. Darned near soiled my upholstery over that one!!
In the mirrors and see my drivers side rear tire on my FULLY loaded flatdeck going all over the place.
Yeah, if it is a blowout, you'll know it. Anything else is a slow flat that goes un-noticed.