I don't know.

Many roadies ride 23 mm tires on 17 mm rims and 40 mm tires are frequently run on 24 mm rims for gravel.

That chart is definitely skewed. What is the source?

Mavic put out something like this stating that certain size tires should not be used on wide rims but that was before they actually produced any wide rims. My guess is that this is more of the same, bias toward a certain manufacturer's product line at whatever time it was produced.


-Tim-