It is funny that so many people are in panic but apparently forget how a car factory works...
Just look at the timeline when this car with be officially out (late 2020 or even 2021), so I doubt that there are already even pre-prod cars on the lines with final stage parts and so on...other leaks we saw (front, back) where different and close to public reveal...
Just my two cents, but for me this looks as follows:
This is a not at all a finished car that we see here, this is used for testing clearance, setup tooling and so on for the factory lines.
The wheels that are mounted are for sure only there, to be able to move the car (as the widest point are anyway not the wheels.)
Diffusor could be painted to better setup the tools and check clearance as it is more difficult to to check these things on black / carbon and for sure a lot of parts are not completely ready yet or would not be used in production quality to setup various things. Just look at the latest test mule videos, and you see that the exhaust tips are way bigger than here...
So don't panic, just wait and you will buy it anyway
