I have a problem with modelling a complex SubD model. It’s a tire with 32K faces.
If I convert this to SubD and then extracts the render meshes it is a 8M mesh
Each face seems to be divided into a 16x16 mesh by visual inspection.
And also 16x16x32K = 8M so I guess it’s a right assumption.
IMO 4 x 4 should be more than enough for most needs.
Tire to SubD.3dm (1.9 MB)