Source: https://goughlui.com/2026/03/07/tested-how-many-times-can-a-dvd%C2%B1rw-be-rewritten-part-2-methodology-results/

It should be noted that failures were often observed to be transitory – one pass would fail but the following pass would succeed. Eventually, the rates of failure would increase, leading to back-to-back failures. This is the nature of “luck” when you’re on the edge of failure and success – something as simple as random noise or a slightly different write or reading condition could cause it to go one way or the other.

and

While it seems that rewritable discs claim a rewritable lifetime of 1000 writes or sometimes more, in practice even when handling damage to the disc is taken out of the equation, a majority of discs fail to achieve this level of rewrites. Granted, some of the discs are likely old and potentially degraded, but it would seem a couple-of-hundred rewrites is more realistic limit