due to the loudness of the event on the flight deck but subsequently determined it was a main gear tyre
I have experienced several main gear tyre failures which occured during the takeoff run and with takeoff thrust set, all you can hear is engine noise. However, I'm talking with 747 experience. Perhaps on the much smaller 737, a tyre burst could be audible on the flight deck but most tyre failures during the takoff run would not be explosive but more likely, a thread seperation like shown below.
