I don't care if the physics are not completely like real life. As long as it's fun to drive, and the car seems to react somewhat close to what it does in real life, that's more than enough for me.
Also, why is it that LFS is the ONLY god damn racing game that have a good crash/rolling/spin physic? I swear, all the other "sims", try to roll over and see the shitstorm unfolds. Either have like LFS, or have some crazy, but FUN roll-over physics like the Flatout games.