Originally Posted by SeaDog
your experience backs up the good practice of actually inspecting not just checking air of your tires prior to each departure. belt separation can be hard to detect I have seen it in the form of one tire appearing larger then the other on visual inspection and confirmed by removal.
Much easier to detect if the tires are inspected while lifted off the pavement. With the tire up and able to be rotated freely it's a lot easier to see if a separation is developing either in the form of a subtle bulge on the tread or tread "grooves" that have a crooked area.
A great time to check is before starting the season and especially before any long trip.