Hi
In LFS I can normally have smooth animated multiplayer racing (and that's the only realistic racing anyway in my opinion) without the slightest dropouts.
Anything else, content, graphics, tire model, damage model, you name it, doesn't interest me in the slightest way, as long as it is programmed in a manner which I can call realistic. This is fulfilled in LFS and it gets better.
Bottom line: The main aspects of a good race, in my opinion, are not perfectly designed graphics, highly diverse or licensed cars and tracks or a absolutely perfect physics engine. It's a bunch of good, partly cold blooded, partly hot headed, racers who don't give anything about a perfectly modeled engine sound.
It's about racing. I can do this here.
Greets,
JPursey