The towing bill that resulted from the tire blow-out.

An close-up view of the puncture. Note how it is not a single hole, but
actually 3 separate holes. This is what would result if there was a fold in
the tire, causing it to wear through until a leak occurred - but not wore
completely through the rubber in the 2 sections that connect the 3 holes.
(click this image for an even higher-resolution view)

A photo showing where the puncture is located, relative to the rest of the tube;
on the inside circumference where folds develop when not installed properly.
There was no nail through the tire and the tire itself was brand new; put on only
2 days prior. The hole that resulted is clearly due to the tube having been pinched.

The towing bill that resulted from the tire blow-out.

An close-up view of the puncture. Note how it is not a single hole, but
actually 3 separate holes. This is what would result if there was a fold in
the tire, causing it to wear through until a leak occurred - but not wore
completely through the rubber in the 2 sections that connect the 3 holes.
(click this image for an even higher-resolution view)

A photo showing where the puncture is located, relative to the rest of the tube;
on the inside circumference where folds develop when not installed properly.
There was no nail through the tire and the tire itself was brand new; put on only
2 days prior. The hole that resulted is clearly due to the tube having been pinched.