There is a modified version for blender 4.1 in the attached link, but this is not a modified version by the Addon creator.
I don’t know what kind of problem there will be.
I think maybe the lower version will work on blender 3.6.
I think it’s an issue with the model. I can easily rig a car but I just can’t do this model. Not a problem as such with the model, just I am doing something wrong when rigging the objects.
Ideally would like to have 5 objects. Body and wheels x4 I’m parenting the wheel objects and body objects together. Just not sure what is going on. Gonna strip it back to basics.