How did this happend?

Ehm dose anybody know how to make the Gavril D15 Offroad back to standard? Have uninstalled all my mods and the game many times but the Gavril is always broken

 

You could change and add tires yourself

 

Do you know which ones is the right, cause i dont Edit: The bed seems to stick inside the car to and i dont know how to fix it

 

The bed is because you probably selected the short frame and a extended cab so you either choose the longer frame or the normal cab. And the wheels, the trail something with the 33/35 tires do the job

 

Have you tried entering safe mode (just in case) and try to clear the cache. If that doesn't work, maybe look into the files of the game.

 

And to answer your question about what happened, it looks like a screwed up config