Over on Steam, there is a discussion of a major issues with 25% career length races and engine wear. The game treats each practice lap the same as a race lap but calculates the number of wear laps at 25% of full race distance. This means that each practice lap is equivalent of ~4 full race laps. This means that your engines and gearboxes will be worn out after every race (about 60% wear). This could be fixed in a patch but Codemasters also made the game...so, it might not be. Just thought you all should know. Other than that, the game is actually a solid GAME (not sim) but game with a nifty career mode if this gets fixed.