Cars - Cadillac Racing V-Serise.R car model issues, weird car sound, and wrong car stats

The car model on the caddy feels like an alpha version before the final design. Various features of the car are missing.

Rear end: (specifically lights)

Front end:

The engine sound is a little off from the real car (especially at high rpm’s):

The stats of the car also seem to be wrong. The weight of the car is way more in Forza than irl, and the tire width are too thin in Forza.
Correct spec:
2,270.8 lbs
315mm front tire
355mm rear tire
Forza spec:
2,436 lbs
285mm front tire
325mm rear tire