I have never mis-seated a tire bead and blow out a $15 latex tube when pumping it up. Not me.

Tire nowadays are so tight and hard to put on, I have ruined a few tubes getting the tire on. A Challenge Parigi_Roubaix on an A23 rim was utter hell and yes, I know exactly how to put the bead into the well and to work the bead and tube into the well. I think the lawyers buggered up the dimensions. You might have pinched the tube lodging it just a bit between the tire bead and rim. I was stretching out a Challenge Parigi-Roubaix and 2-3 hours later, there was a 22 round sound from the dining room. I grabbed the G20. Just a blown tube and a tire clean off the rim. 2-3 hours after full inflation. I obviously screwed up. Once I got them stretched, getting them on and off is a piece of cake even w/o any levers using good techinque. Wait, I imagined this. I really did not lose all the skin on my thumbs mounting these tire.