(Abandoned) Supercharger mesh shows up incorrectly

Tbh I feel like since you are using common materials in the first place, the textures shouldn't be a problem at all. I would suggest you to go to the "temp" folder of your vehicle folder and detect the old .cdae or material cache and retry them without the materials.json.

 

I don't have a temp folder.

 

For example: C:\Users\yourname\AppData\Local\BeamNG.drive\0.32\temp\vehicles\yourvehicle

 

Update: I've decided to simply abandon the supercharger thing. It's almost impossible for me to get right, since I have almost no experience in Blender.