Suggested

Reduce parts used in 2 car

The parts used per race is now not sustainable.
For new players it is already very challenging to play in a 2 car league with no additional income from the game but double the car and driver cost.
Now with the parts usage outpacing a max level manufacturing building it is a bigger problem than before 

Having tested this in the recent races in my league, I can say that the part wear does significantly decrease if you invest in reliability.

But yes, I do think it might be a little too extreme at some circuits.