Now that's a blowout! The Bestest/Worstest I ever had.
It was a beautiful day for a bike ride, so this past Sunday Morning, I took the Cargo Bike to the store. As I approached an intersection, I gently applied the brakes and KA-POW!! The explosion was so violent that my ears rang for nigh on an hour afterwards.
I dismounted and noting the tire jammed between the brake pad and rim, immediately ascertained the cause. I obviously had not seated the bead of the tire fully in the rim. Upon pumping to 80 psi air pressure, a small portion of the tube protruded, unbeknownst to me, between the tire and rim. I applied the brake at just the moment that said protrusion circled past. The combination of tube, tire, rim and brake pad trying to occupy the same space at the same time proved too much for the system to bear and wah lah, there you have it.
Being a scant half mile from home, I opted to forego breaking out the tire changing gear and pushed the bike home instead. It was a beautiful day for a walk.