ah .. interesting question.
The standard requirements are geometry based rather than having a rational handling basis.
Many years ago Australia was the one country which implemented an ICAO recommendation to require a rational handling assessment for aircraft intended to be operated from lesser width runways.
As part of the various test programs which were done, and the regulator's development work on the subject, it became very obvious that more than a few aircraft sensibly needed more than the prescribed geometry-based limit widths .....