So I've cloned Classically Cool Fixer Upper car to create new car models with those animations. The joints for the wheels are off and I can't figure out why. Whenever they open the car door, the wheels turn, shifting away from the axle and the textures assigned to the engine parts disappear. This also happens when you pop the hood to work on the engine as well. See video below:

https://youtu.be/Zb0Lvz3WY0A

I suspected it had something to do with the _RIG file but can't figure out what or why that affects the texture. Any thoughts/help?

Update: In case anyone is is having with this issue, the fix that Greenplumbob suggested in another thread worked for me.

Glad to hear it's working for you ^-^

Thanks for your help!