I’d like to share the result of my low poly exercise, during which I have practised UV stacking, baking in Marmoset Toolbag and UDIM workflow in Substance Painter.
The model is based on a high poly car which I made in the past:
Average UV space usage is 75% and average texel density is 2600 px/m (more for areas containing fonts). Now I think this TD might be a bit of an overkill, but at least it still holds the details well in SD texture quality on Sketchfab. Nevertheless next time I will target 1500-2000 to save some UV space.
Hope you like it!